If you're like me, you're probably absolutely anxious to change your last name.
But play it safe and travel under your maiden name. First the certificate has to come - mine took exactly two weeks to come in. Then SS has to process the name change and mail you a new card. Then the DMV has to change your name. All of that will add up to more than 5 weeks. Most DMVs will not use the certificate of marriage as a sufficient proof of a name change (some will, but they're not actually supposed to because some people have used this to their advantage - changed their name on only their license and yet their SS and essentially their entire life remains in their maiden name.)
Just stick to your maiden name - I'm doing this for my honeymoon cruise because my passort won't be changed in time - and change everything when you get back.