Aloha from O'ahu. For inexpensive, centrally located accommodations try the "Hawaii Polo Inn", 808-949-0061. Within walking distance to shopping, beaches and on the bus line. I think it is a 2 star property, affiliated with Aston properties.
Entertainment 2001 books expire Nov. 1st. Many attractions offer military or AAA rates. Your sn should be able to purchase attraction tickets/packages throught any MWR
location.