We will be taking a trip to Denver in late May for a long weekend. Me, my daughter age 7, and another friend with her kids - girl age 8 and boy age 12. Can anyone recommend some fun things that would be fun for the kids? I was looking at the aquarium for Friday (when we arrive) and maybe doing dinner at the restaurant there? is it worth it? We will have all day Saturday and most of Sunday before our Taylor Swift concert on Sunday night If it helps we are staying downtown by the convention center at the Hilton Garden Inn. Thanks for any advice!