5 days in Guam

I'm going to be in Guam for 5 days, from mid next week, and was wondering if anyone had any brilliant ideas for what we could do.

We'll be staying in the Tumon area, but we've hired a car, so we can travel about easily. We're interested in almost anything Guam has to offer - water sports, partying, cultural sites, hiking, shopping, so any advice would be appreciated.

Thanks!

From the information I have received, there is plenty to do. On Wed nights the Chamorro Village has what sounds like a huge festival with food, markets, entertainment. I am sure it is "touristy" but sounds like fun. Water sports, boonie stomping, night life, shopping, touring...there seems to b much going on.