R.N.
We just took our 15 month old to Steamboat Springs CO, a VERY family firendly resort. It's expensive, but they all are really. It was nice (my son is also 15 mo) and he did get altitude sickness which made nights yucky! I wouldn't recommend going. Someone had to do nap duty too. I was just plain exhausted whne we got back esp. after the plane ride. My son got sick from the plane ride after we returned too. My new motto is no trips until potty training and naps are over.
There is a Walmart there and a lot of family activities. ALso, there is a place called Babies Away where you can rent EVERYTHING (even a bin of toys) for a reasonable rate.