My husband and our two children (ages 5 and 2) will be staying in Grand Lake, Colorado. June 1-4th of 2012. I've read the forum and I'd like to go on a boat ride with the kids, and see Rocky Mountain NP. We are staying at the Gateway INN. What are some other activities that would be family friendly? Also, we are willing to drive to see a Railroad museum or ride a train in the area. My oldest son is in love with anything train related. Thanks for your help.