30 Wedding Guest Mistakes to Avoid

Make sure you let the soon-to-be married couple that you'll be attending the wedding. Showing up without mailing in that RSVP card will not only throw off their seating chart but also make for a not-so-warm welcome on their wedding day.

If the ceremony begins at 5pm, don't swing in at 5:15pm. If you think you can sneak in and snag a seat in the back, be prepared for lots of eyeballs to hit you hard when you open up the doors of the church or temple and try to find a last-minute seat.

You don't want to make the ceremony unforgettable because your ringtone interrupted the happy couples saying "I do." Be sure to keep it on silent or — to be extra sure it won't go off — turn it on airplane mode for the entire ceremony.

If you want to speak at the wedding, chat with the couple beforehand, but keep in mind that they may not want guests to think it's an open mic kind of night and have speeches drag on for a good chunk of the reception. Just because there's a microphone at the party, doesn't mean you have permission to use it.

Imagine how many texts and calls and emails she is getting the week of the wedding! If you can avoid it, don't text the bride right before her wedding. If you have a question, check with another guest or even a member of the bridal party.

If you weren't told you could bring someone to the wedding, know that you have to fly solo. You can't sneak in a plus-one and don't ask the bride or groom the week of the wedding if you can bring somebody with you.

Save the pearly white color for the bride. Even if you think it's okay to do, wear any other dress just to be safe. Let her sparkle in her wedding dress.

You may have decided you're not going to give the couple a gift — that's your decision. But if that's the case, at least bring the couple a card. It will mean something to them to get a card from you on their wedding day.

You may be so excited for the ceremony that you find yourself saying sports-like commentary throughout the wedding and giving the people around you a play-by-play. However, you should try to refrain from chatting during the ceremony.

Turn your flash off so that you don't blind the Rabbi or the couple while they are standing up there at the altar.

Maybe nobody will ever know you weren't there, but you will feel very weird missing the most important part of the wedding. Make it for the ceremony and just remember that no matter how long it is, there is a party to follow.

Limit the amount of alcohol you have before the wedding. Usually there's an open bar, which means a long night of drinking ahead. Make it through the first few hours without unleashing the party animal inside of you.

If you're a vegan or eat gluten-free, be sure to tell the couple that sometime before the wedding. That way, they can have the venue prepare a special meal for you.

Just because they have free drinks, doesn't mean you need to take full advantage of that. Be sure to pace yourself, too. That way, you won't find yourself passed out on the table before the cake is cut.

If you have to leave early, that's okay! But if you need to head out before the official exit, skip saying goodbye to the couple. That way, it won't make them panic that you're leaving early.

Refrain from passing out in the cake, on the dance floor, on the bride, in the lobby...really anywhere.

The bouquet tossing time should be fun. Don't get too competitive when the posy of peonies is thrown. Avoid elbowing people around you and pushing them away so that you can come out victorious.

The bartender won't like that very much and you may even end up getting kicked out. Remember, this party is not one from a spring break cruise. It's a wedding, so keep the drinking classy.

If you're pretending that the dance floor is yours and only yours, you'll scare other guests away. You can break out the "worm" dance move only once before it's time to give other guests the chance to show off their dance moves, too.

Just because there is a microphone does not mean you can grab it and belt out the lyrics to the songs playing. Step away from the mic and sing along on the dance floor sidelines.

Weddings make people smell more than usual. This is usually because you're in a crowded area and often sweating a lot. Bring some antiperspirant with you and reapply throughout the night.

Try and check with the bride or the bridesmaids before the wedding to see what color dresses they are wearing. It's always a little awkward to show up looking like the third wheel bridesmaid.

Even if the wedding invitation says it is not a black tie event, that does not mean you're allowed to wear jeans. Even if they are "nice" jeans, opt for the dress pants or something a few notches above the Levis.

Be sure to say hello to them when you sit down. You were placed at that table for a reason so chances are you have something in common with the people around you.

If you want to see if there are extras, wait until the end of the night before grabbing another. Or you can ask the couple after their wedding if they have an extra to send you. But don't be greedy and grab more than one.

When the DJ says goodnight, be sure to take that as your cue to leave. Perhaps there is an after-party to go to, but try not to linger around the venue for too long. The couple will have to pay if they go over the amount of time for which they rented it. So when they say the wedding's over, it means it's over.

If you are also a bride-to-be and in the process of planning your wedding, try your best to just keep your opinions about decor to yourself. Take mental notes about what you like and dislike about someone else's wedding, but on the night- or day-of, keep it positive!

On both sides of you, that is, especially if they are singles. You never want to have your back turned to the person on one side for too long. Use this as an opportunity to make a new connection and learn more about the couple.

The couple has agonized over the type of food to serve, the style in which to serve it, and all the details of catering—not to mention how much they've shelled out to feed you. The least you can do is pretend it's delicious and save your comments for after you leave.

Though it could be kind of funny, it's also super embarrassing for Aunt Leslie to walk into the coat closet only to find you and another guest in various states of undress, rolling around atop her blazer. Do everyone a favor and leave the grounds of the venue if you want to get jiggy with it, or at least go up to your hotel room.