I live in NYC and have been to LI a few times, only to visit some family. Honestly, on the weekends if you can help it, GTFO of LI and get your ass to NYC. There's no good reason to waste time in LI or the surroundings when a pussy heaven like NYC is so close by. The diversity alone should be a huge argument in favor of NYC. No matter the race/type/age range, you can find it easily in NYC.
Pussy ain't for pussies...