As a groomsman, you probably haven't had to do a lot of preparation for this wedding. That said, if you haven't given any thought to what you should do, and you get a sudden, unpleasant feeling that could pass for heartburn, coupled with a little voice inside you head that says, "Geez, maybe I forgot something..." GroomGroove.com has written this article just for you.

The Day Before - Relax, Rehearsal and Rehearsal Dinner

Relax - All Day

Shorts, flip flops, summertime. It's a beautiful July day before your friend's wedding, and family and friends are all arriving in town for the wedding. Chances are, you arrived yesterday. There's not much stress on you - you can take the time to catch up with friends you haven't seen in a long time. You'll have picked up your wedding attire from the tuxedo rental shop, tried it on and taken care of any last minute issues. Forgot to bring a pair of gold colored cufflinks, like the groom asked you to? Don't run off to the groom in a panic - he's got bigger things to take care of. Be the man that you are and run out and get those cufflinks. Or black socks. Or whatever else it is that you've forgotten about!

The Wedding Rehearsal - About one hour

In the early afternoon or evening, there is likely to be a rehearsal of the wedding ceremony itself with the bride, groom, family and you, as an attendant. This will significantly calm your nerves and the nerves of anyone who is called upon to read during a religious ceremony. "When exactly do I sit down?" you will ask. The rehearsal will answer all of that for you. And if you have any doubts about any part of the ceremony, now is the time to speak up.

The Rehearsal Dinner - About two hours

After the rehearsal, you will probably proceed to a rehearsal dinner. This can be as informal as Subway sandwiches or as formal as a sit down meal at a nice restaurant.

The Day Of the Wedding- "Go Time"

Prep Time - About 2 hours in the morning

Hopefully well rested, you will kick off the day with a good, full breakfast with your groom and the men in the wedding party. This will probably be the last opportunity to relax before things really get rolling.

Get Dressed

After breakfast, you'll want to get dressed in your tuxedo. GroomGroove.com has suggested to grooms that they have all the attendants meet the groom where he is staying, be it his hotel room or home, to get ready together. Why? Typically, boutonnieres (pronounced "bootoneers") will be delivered to the groom on the morning of. Further, the entire party is present and assembled one spot. Finally, many couples will document the day by having the groom and his attendants pose for photos with their photographer as they are getting ready, or once they are ready.

Pre-Ceremony - 30-45 minutes prior to the Ceremony

You may be called upon to greet guests as they arrive. Don't be shy - there are plenty of young single women to meet. You will probably use this time to help the best man keep the groom sane and entertained.

The Ceremony Itself - around 45 minutes

This puppy will be over quickly. Hopefully you'll have remembered when and where to stand or sit. If in doubt, ask the best man.

Post-ceremony - About 45 minutes to an hour

Between the ceremony and the grand entrance of the newlyweds at their wedding reception, the wedding party and Larry, the wedding photographer, will step away from the watchful eyes of the guests to have additional wedding photos taken. This could be at a spot near the ceremony itself, or the couple may have planned to hop in the batmobile to whisk away to a special spot Larry has designated for this purpose. This is the easy part. Smile!

The Reception - About 2 hours

Food, drink and speeches. That's about all you need to know, other than when, exactly, you'll be making yours. Make sure you've had a discussion with the wedding MC a couple of days before the reception and, ideally, the night before as well. He has to keep things rolling, otherwise it will be painful between courses and toasts. Don't be caught off guard as that will add significantly to your nerves if you are called upon to make a toast or even some remarks.

Post Reception - All Night Long