Ladies I know many of you may disagree with me but I want to express a personal opinion here. I have been to many weddings where the couple have chosen to skip the receiving line and visit tables during the reception; this is what I have observed.
1) Inevitably someone at the "last table" you visit had to leave early and therefore did not get to speak to you etc.
2) At many tables one person or a couple of people hog the couples attention so that many at the table cant get a word in edgewise.
3) If you happen to be the "parents" friend sitting at a table full of friends of the couple you get slighted because the couple wants to greet their friends.
4) The first 1/2 the tables get more time then the second.
I could go on if I thought about it. I always groan when the couple skips the receiving line because unless I am super close to the couple that invariably means I am not going to get to talk to them. (Surprisingly in person I am very introverted).