Nightlife in Roatan is certainly not boring if it could be accused of not being a full on party. It sits very nicely in the middle and what you would call healthy. Scubadivers do like to let their hair down when younger so you will often find the instructors and divemasters at places like the blue marlin and sundowners.
Check this facebook board for a list of up and coming events Roatan Music Scene. More discussion on the topic can be found here- TripAdvisor
During easter time the island has an influx of Hondurans eager to party for Semana Santa then the island goes crazy busy and there are later nights for sure.