I'll be going to Royal Lahaina tomorrow, and yeah, the lady at the front desk was super nice when I asked for info on court time and stuff.
Further down are 3 red clay courts for people staying at the kaanapali alii. I've only played on har tru once when I was young so to see those in person was kind of cool. Bummed I couldn't hit on them.
I think next year I'll plan a trip to a resort that has all the different surfaces...