Lombok is a Muslim island with no nightlife industry to speak of: Kuta's surf bars are the only real scene, Senggigi is a shadow of its package-tour years, and anything bigger means a boat to Gili Trawangan.
Kuta Lombok's bar strip
A few dozen bars, warungs and surf hangouts along Jl. Raya Kuta and Jl. Pariwisata, mostly one-room places with a sound system and cheap Bintang. It fills from about 20:00 and thins out by 01:00 — there is no club here.
Ashtari, above Kuta
Hilltop restaurant on the Mawun road out of Kuta with an open ocean view, and the standard spot for a sunset drink and a slow dinner before town wakes up. It doubles as a yoga studio running daily classes, retreats and cooking courses.
Senggigi
The island's original resort strip on the west coast, now a scattering of hotel bars and a couple of live-music places along the main road. Manage expectations: much of it closed when tourism moved south to Kuta, and weeknights are very quiet.
Drinking outside the tourist areas
Alcohol is limited or simply absent in most Lombok villages and across much of Mataram, and during Ramadan plenty of places cut hours or close. Buy in Kuta or Senggigi rather than assuming the next town has a bar.
Crossing to Gili Trawangan for the night
Public boats from Bangsal harbour run through the morning and stop in the afternoon, so a genuine night out on Trawangan means staying over rather than day-tripping. Fast boats and private charters go later but cost several times the public fare.