Seems the only place we found w/ music on Monday night (this was in July) was at Mango's... Barefoot Skinny was doing joke night. It's just him & maybe 1 or 2 other guys playing w/ him, not the full CatX band. Some tunes, then audience participation joke telling, then more tunes. A very casual, small place... I like it
re: dinner, if it were me, I'd follow others advice from this BB, take a water taxi up to one of the nice restaurants at the northern end of the island... Capricorn, Mambo's, etc. We did not do this ourselves, so I don't have a 1st hand report, but for a small wedding group I think it would be ideal... go north for dinner, then stop by Mangos later if you still want to hear music ...