You might want to take a look at the Go Oahu Card at www.gocardusa.com. We have used them in several different cities. They also help in planning your itinerary for the trip. It even comes with a guide book of the city. You will love it there. Its beautiful. We also went in April. As for the dinning there are lots of places to choose from. I think we ate breakfast at Denny's every morning. And if you hike up Diamond Head be sure to wear comfortable shoes and take bottled water. Its beautiful up there but I will not do it again. My calves hurt for 2 days after that. The food and entertainment at the luau's is excellent. Pearl Habour is a must. Have a safe trip and enjoy.