Vail is huge, the is something for everybody, the back bowls are huge
Vail is really big
Vail is basically one stop shopping for all of your ski needs. In that way it's kind of like the Wal-Mart of skiing. But it's not cheap, so it's also kinda not like Wal-Mart. I cannot not recommend Vail, its fun. But at the same time it can be a little much for most and a little flat for experts.
You won't ski every run; I don't care if you spend 20 years there. The gondola experience is a little bit of a cattle shoot experience, but Vail isn't really alone in that. Parking is plentiful, but confusing because you might not know exactly which of the 3 freeway exits to use to get on the mountain.
After parking and waiting in line to buy your lift ticket or to board the gondola or lift and then a ride somewhere on the mountain and then another ride somewhere else, you'll probably be ready to ski. There is the option of paying a great deal to stay on the mountain.
The back bowls are awesome. The bowls aren't terribly steep, but they are still fun. They'll get skied out pretty quickly on a powder day, especially if you are fighting Denver weekenders, so move fast. Blue Sky Basin is spectacular, but it takes some work getting there.
Overall, Vail is a great resort, but certainly not one of Colorado's top ski mountains.