The chatterer barber who sits next to Larry in the airplane and Chief Keneewauwau of Nontoonyt Island are parodies of Ken Williams, CEO of Sierra On-Line and the executive producer of the game.
The barber at the airport is princess Rosella from King's Quest games.
If Larry makes it with Maria the maid at the resort guest room, her brother Carlos arrives and shoots him. This is an inside-joke about the programmer Carlos Escobar.
The name of the mad scientist Dr. Nonookee is a pun on "no nookie".