After spending a week in SLC and Heber Valley/Sundance area - our family (2 adults, 11 year old boy and 9 year old girl) are heading up to GTNP and YNP. Back in January, I made a reservation at the Jackson Lake Lodge for Friday night, at the Canyon Lodge on Saturday night and at the Old Faithful Inn on Sunday night (Monday afternoon, we will need to drive back to SLC to stay at airport for early morning Tuesday flight home). So, now I am looking for suggestions to fill in our itinerary - the parks are so HUGE - I'm not sure what I will be able to include - fun hikes, sights to see and explore, etc - for the rest of our trip. Your help is greatly appreciated!!!