Visited the Arizona memorial on a half day tour by shuttle bus from Waikiki. He trip cost $39.00 per person but I found out entry to the site was free. Anyway, by taking a tour bus you get prioritised entry to the Arizona which otherwise you can wait up to 3 hours for if you just turn up yourself. However if you get there early I understand you don't wait that long and there is a public bus (The Bus) that takes you pretty much from anywhere on the island to any where else on the island including from say Waikiki to Pearl Harbour for just $2.50 and it's free return within 2.5 hours of boarding. Half a day at Pearl Harbour is plenty of time to spend there unless you're a fanatic. Also remember that you can't take any bags on site due to security reasons.
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