Book your flights into Honolulu (HNL), camp is located about 45 minutes from the airport!
If you're staying longer, I recommend renting a car. It's the easiest way to get around island, Uber is expensive!
If you decide to stay longer or come earlier, anywhere you can find a reasonable Airbnb on island is good! The only places we wouldn’t recommend are anywhere north of Ko Olina, so Waianae area. Honolulu will most likely have the cheapest options, however it is the busiest, most touristy area! Airbnb is most likely going to be the most affordable.
If you're wanting to stay somewhere on island after that's not resorty but in a good location, this hotel is located about 5 minutes from where Jake and I live! It's surrounded by a mall, with plenty of food options.
Ko Olina is a nice resort located on the west coast (where Jake and I met) with kid-friendly lagoons off each hotel. It's a bit pricier, but the Marriott and the condos next door offer larger rooms if you're looking to book with multiple people at a family friendly place. The Disney resort is also located just a hotel down.