With 120 or so stores, and Macy's as the anchor, the Micronesia Mall is definitely what you would expect to find in an American Territory. The mall is also a good central place to get your pre-paid telephone cards for calls home on your cellphone, and or SIM chip for using the local cellphone system. One of the best tourist items you can get on Guam is one of the T-shirts from the Harley-Davidson shop on the 2nd Floor. The back of the new shirts ($25) has a Harley Mariannas design that it pretty sharp looking. The old designs are harder to find.
There is an ABC store in the Mall, with a few more items than the ones every 100 meters on Hotel Road, particularly in the T-Shirt selections. There are also numerous other Guam and Mariannas souvenir places in the mall for whatever tourist items you might want.
Amongst the food places in the mall, Cold Stone Creamery is there (on the first floor)and always a great way of beating the Guam heat. The food court has your typical mall foods with a Jollibee and several other Pinoy and Chamorro fast food type places to eat.