A wedding banquet is really just a celebration, and being the wedding couple, you are the hosts. You can plan your banquet program anyway you want.
I've filmed couples who did the standard wedding banquet protocol of 2 march ins, cut cake, video highlights, yam seng, etc and yet their presence wasn't felt. And I also have couples who had only 1 march in, no video, no cake, etc, but delivered v good speeches that touched everyone, and mingled with all their friends and relatives very well. It was truly a celebrations and was really memorable for everyone.
So please don't be restricted by conventional practices. Treat your banquet as a party, be sincere to every guest and the results will be fantastic.