Thumbs up to Blue Bonnet and Hanging Lake. The hike is steep but should only take within 30 minutes - you will see folks of all ages. Denver and Vail both have tons of good restaurants and night clubs so you won't have a tough time finding something. The downtown mall and parks are good too - beer is allowed at least in Washington park (if not all of them) so it's one big party on the weekend.
We also have Elitch Gardens and Lakeside amusement parks, and Waterworld waterpark.
Also obviously some great mountain roads. The drive up to vail from Denver is pretty straightforward, but the peak to peak highway above Boulder/Nederland is pretty amusing. Have fun, Pete
BMW Performance Suspension, Lowering Perches, Cobb AP, Beyern Mesh 18" 265/235, Golf Tee, Tint 20%, M-Tech Front/Rear [b][i]