I guess I'm jaded perhaps, but having visited the Hawaiian islands over many years, I think of Lapperts as a smaller, local company specializing in ice cream and coffees too (since the 80's?)
Seeing one at the Hilton Village surprised me for a moment (blinking to be sure I wasn't seeing a Cold Stone or other mainland chain) but then felt like it was right at home, at the end of the little shopping village alongside pizza, oysters-in-the-shell, a Benihana's, and luau.
Lappert's is known for its fresh, delicious ice cream (and in the past for its coffee as well). It has great waffle cones, shakes and other sinfully good desserts. Yes, I passed it at times with long lines (especially after a hot beach day or dinner time) and sometimes not so bad. Mostly Hilton guests, I assume, it being tucked away in the rear of the shopping/dining central mall.
Anyway, yes, of course it's a bit pricey compared to some neighborhood ice cream shoppes, and yes it can get busy (the only thing like it in the mini-village), but as other say, it's just as one might expect, a nice indulgence which can hit just the spot on a fine Hawai'ian day. Not much else to say beyond 'good ice cream and desserts', yes the staff is friendly and hard-working, and... Aloha! (Title refers to childhood rhyme: I scream, you scream, we all scream for ice cream!) Nice variety is found here.