It's a really huge airport with a lot of facilities. Going through the customs is kind of stressful as often in US and it can take more than 1 hour to wait for your turn.
Going from one island to another in Hawaii, you don't have much choice than taking Hawaiian airline. The service is ok. It's like taking a bus... The flight is short but they give you a little (...
The airport it self is ok but it seems to me that it was really easy to check in your luggage without going through the security gate. I don't if there was some construction or something like that...