I am planning on getting 10-15 free nights during the next FFN promo and have tons of FF miles (1.4M CO, 200K AA, 250K UA, 600K US) to use for flights- so I wanted to take the wife and my 9 and 11 year old for a great trip somewhere and was hoping for some suggestions.

I have read all the "Best/Worst" Hyatt posts but thought that suggestions there might be different when it comes to traveling w/ kids (like PH Tokyo might be a great choice for 2 adults but it might not be great for children). We are interested in an exotic resort location (but not Hawaii as we just went to Kauai/Maui last summer- loved it!!) or a city location with interesting sightseeing.

My kids are well traveled veterans so don't worry about flight distances (they've been to Europe 5 times, Hawaii twice, Mexico twice.... and handle the travel really well and love telling their travel stories). Let me know what you think. I also have tons of Marriott points (1.2M) too if I need to supplement as well as 130K Hyatt points for extra nights if needed (if we need 2 rooms per night in Asia... we could use points to make that work). We'd like to go for 12-14 days total and it would be this August.