Some meets are a lot more than doing a ride together. Let's see, I'm going to a meet at 50's P/T for dinner with a group of over 70 other, I'm going to a meet that's a gift swap, a meet that is s photo scavenger hunt through MK...just to name a few. Yes, some meets are joinging up with others and going on an attraction, but the really fun ones are ones you have to sign up for, in advance, with various other online communities.
It's one of the great things about going to WDW for MouseFest...I've been going for 4 or 5 years now...every year, I do a different meet. I've met a ton of terrific people that way.
Just wanted to show that there are different types of meets out there, you just have to look for them.