As far as your question about whether or not Hot Mass is worth it - I would check out the DJs that will be playing the night you’re here and see if it’s your vibe. The crowd and overall vibe can be quite different depending on whose night it is and what DJs are playing. There are people who show up earlier (11-midnight) but it typically doesn’t fill up until 2am and beyond. The party goes late (anywhere from 4:30-6am), they bring in incredible talent, and all the resident DJs are great as well so imo it’s worth it :)