you need about 1-2 hrs

Very much so

Sure just bring umbtella to walk between the buildings — there are few planes outside but most are inside two different buildings

Arizona is free. You just need to line up the morning of your preferred visit date at the gates. Get there early to avoid missing out!

You aren't able to drive a car over to Ford Island to see the museum. Your access over is via bus at Pearl Harbor Park. There is a card called Go Oahu that you can purchase online or through Costco. This card has many great attractions available on it. If purchased online through the company, you chose how many days you want. If you purchase through Costco, it is a four day card. Costco is the best deal. A three or more day card gets you a bonus attraction. I took my group of 30 to the Polynesian Cultural Center for the day and used the bonus attraction of a luau. It was great. The card is good at each attraction one time. So if you go to five attractions in one day, they are covered. We went to Pearl Harbor Park, got tickets for the Arizona Memorial (do this early as they only hand out a certain number. You need to hit the park when it opens.) We also got tickets for the Bowfin submarine, Battleship Missouri and the bus that transports you to Ford Island. (At Ford Island, visit Missouri first as it closes early then go back to the Pacific Aviation Museum). All of these are on the Go Oahu Card. We chose to rent a vehicle as it enabled us to tour the entire island. Many of the attractions were near Waikiki area, but some of the really neat adventures were not. My favorite of luaus is Germaine's. Unfortunately the last time we went, it was not on the Go Oahu Card. We did the Polynesian Cultural Center instead. Food was good as was the shows. I liked Germaine's the best as it was right on the beach and you were able to see them roasting the pork and participate in the show if interested. Have a great trip. It is one of my favorite places to go.

By booking on line, we were able to get the tickets for $15 per adult.

Aloha John R, The Bus (Oahu's public trans) will drop you off at the Pearl Harbor Visitor Center. There is no direct bus service from Waikiki to the Museum, but it does take riders to the USS Arizona/USS Bowfin Submarine Museum that houses the Museum's ticket office. TheBus fares are: ages 18 and up, $2.50 one-way; ages 6 to 17, $1.25 one-way; ages 5 and under, free with fare-paying passenger and not occupying seat. From Waikiki, catch the #20 Westbound (destination sign "Airport Arizona Memorial Stadium Pearlridge") or #42 Westbound (destination sign "Ewa Beach") at any bus stop on Kuhio Avenue in Waikiki and get off at the USS Arizona Memorial. Purchase your Museum tickets and follow the signs to board the shuttle to Ford Island. From Aloha Tower Marketplace, catch the #20 Westbound (destination sign "Airport Arizona Memorial Stadium Pearlridge") at the Alakea Street and Ala Moana Blvd/Nimitz Hwy bus stop. (To get to the stop from Aloha Tower Marketplace, head southeast on Ala Moana Blvd/Nimitz Hwy then turn left onto Alakea Street.) Get off at the USS Arizona Memorial. Purchase your Museum tickets and follow the signs to board the shuttle to Ford Island. Hope that helps! Mahalo Pacific Aviation Museum Pearl Harbor