My wedding is getting closer ever day.

There are a lot of things I knew about ettiquette for weddings prior to being engaged, like: no cash bars, invite significant others, do not ask for cash, don't put registration information on invitations, etc.
There are some things I really did not know until more recently, like: some people think showing a video during a reception is rude if everything else shuts down (I'm showing a video but it will be part of the background. Look or don't.), it's not ok to help plan your own parties except the guest list (I haven't had any prewedding parties so I learned this in time!), etc.
Some people told me they think buffets are rude because you don't care enough to let your guests sit down the whole time. I prefer buffets since, as a vegetarian, it's hard to eat a good meal at a plated dinner. Glad I learned that while some don't like buffets, they aren't rude.
My point is, I feel like I learned things in time and I am grateful for that. Are there any other mistakes you or someone you know made without realizing that it shouldn't be done that way? Thank you for helping me avoid pitfalls.
Re: Did you make an ettiquette mistake?
After 6 years and 2 boys, finally tying the knot on October 27th, 2013!
I suppose I had a gap. My church was 30 min from my reception site. However, as soon as the first guests arrived from the church to the reception, the cocktail hour began. Noone had to wait for anything. So, not sure that counts?
I'm also not sure about my receiving line. We had two sets of divorced parents and no one liked each other. So, I just did a receiving line to avoid being accused of spending time with one parent instead of the other. Equal time with each person in my mind! However, I still got accused of being rude because I occasionally went over to my mom to help me with something but didn't ask my dad for help.
That is good! I made sure the reception venue was prepared to receive guests as they arrived!
After being on here for so long, I also know I did a lot of things correctly that I never really thought too much about previously!!
Hahahha how am I suppose to know?! It's my first wedding. It was my first week being engaged too. Not a good start