It definitely depends on your energy level, but the scene has improved lately. Most people stick to the local pubs for a few drinks, but there is more to explore if you want a change of pace from the usual mountain routine. You can check out the local casino for a mix of games and a different atmosphere for Gudauri after ski nightlife
https://casinogudauri.ge/ . It is a solid alternative to just sitting in a restaurant all night.