I know this is a board for brides only, but I happen to be a soon to be bride and working in the wedding industry so I just thought to give some advice.
I am a wedding musician. Today I played at two different weddings.
The first wedding started out with the ring bearer(9) taking me to the wrong chapel (he opened the door to the bride's dressing room and all the women screamed). Later, the ceremony started 25 minutes late. For no reason, and no one told me what was going on and I just had to keep playing the prelude music wondering if it's ever going to end. I'm guessing people at this wedding are not the most punctual guests so they were probably waiting on guests. I am contracted by the hour and the ceremony ended up going over time. There's an over time fee on the contract but I guess no one reads the contract. I decided to just get out of there asap since I have another wedding to get to.
The second wedding went just fine. The only thing that wasn't fine is that after the cocktail hour, no one came over to pay us. On the contract, it said the groom was in charge of the payment so I guess I have to go hunt down the happy couple. I was told that they are still taking pictures outside some where. A very nice staff helped me located the wedding planner who agreed to go ask the couple for me. We ended up waiting for an extra 30 minutes just to get paid. Now, that is just plain rude.
With the situation like this, I would recommend tipping your vendor if you forgot to pay them in the first place which this couple didn't.
Now, I'm not blaming the groom for forgetting. I'm asking everyone to please have a designated person that will be in charge of payments. You ARE going to get too exicted and forget everything. Have someone be in charge of the timeline of the wedding. Keeping everything on schedule and making sure the payments are taken care of. Moral of the story, please don't make you vendor's hunt you down for payments that you owe. It makes them feel awkward and makes you look bad.