The better public courts players congregate at the nine public courts of the Diamond Head Tennis Center (808) 949-7150 and ten fine courts in Ala Moana Park (808-522-7031) between the mall and ocean. Call to for information and to reserve courts. Hotel courts fetch $25 to $30 an hour. Most visitors will find playing at night or very early in the morning a best bet when the humidity and heat are lower.