Hale Kao is the military-only resort there in the Waikiki area. It is a great resort, in a superb location, yet I hear that the on-site food is not the best. Not to worry, there are PLENTY of places to eat nearby. The most crowded time in Waikiki is June through August. The least crowded is September and October. The worst time to visit is December through March, not because of crowds, but because of weather. Those months are known as "the rainy season".

Absolutely. Just need to show proof at check-in.

I have friends here who are military retirees who have booked and paid for rooms for their non-military friends who were traveling here so I don't think it is a problem for you to reserve two rooms. Maybe you'll have to pay for both and be reimbursed by your friend. It is a customer friendly hotel and they will work w you, so my advice is to be "upfront" w them on the phone when you make the reservation. I anticipate they will tell you that as long as you have appropriate military ID and make reservation for both rooms, all will be OK and your friends will be able to pay for their room and you for yours.

Yes, easy to ride the bus. Busses are very nice vehicles. Only need to rent a car for days you will go driving around the island 🌴 otherwise the car will just sit in the hotel garage.

sorry, I don't know about it, but I reccomemmd you can play at the public court such as Ala Moana tennis court, It's free !

I have no idea. The park is undergoing some renovation. Maybe call the visitor's bureau?

It has been a long time for us to be up so early, but there are always people out there day or night

A couple under feet to the west (away from Diamond Head). Not far at all.

Mohammad1 is correct. See his answer. None of the beaches will be what you remember. They have to drag in sand from off shore. Walking on any beach in and around Waikiki and Honolulu may require swimming shoes if your feet are land lubber soft.