I just care about the story is all.
A lot of the patrons are armed. I think only a few of them actually have firearms though. The Andalites have Shredders which are alike to phasers, but if put on a high enough level, can dissintegrate matter. Most of the Yeerk-controlled patrons have Dracon Beams. They're basically modified Shredders, except they kill slower and cause more pain. They too can dissintegrate matter on a high level setting. The current Yeerks at the bar are Eshen, Jocun (unarmed?), Keshin, and Zorish. The other Yeerks would be Illim, Corliss, and Temrash, though all three are inside their respective ships, Illim and Cor in Cor's and Temrash in his own. The only Andalites, I believe are outside the bar. Ossanlin, Claxter, and Efean are all armed with Shredders. Serid, an Andalite stuck in human form carries a Dracon Beam.
Salem has a couple of hand held weapons, but I'm not sure what the effects ot them are.
Vogefac has claws that can shoot energy beams, but mostly the energy is to intensify the claws damage. Van has a rifle slung around his back, but again, I'm pretty sure it shoots energy. Ossy's bounty hunter has an odd gun, he hasn't used it, but his posts suggest that it actually destablizes matter, causing it to dissapate. Is that right Luke? Catie has an energy gun as well.
Gaz and Morgan use caseless ammo, but they're still projectiles. They're both in the bar, and both armed.
Then there's Silver, she has melee weaponry (not including her throwing knives), she had a katana for a time, but I think she traded it in for a collapsable staff. Her other character, Jade, I'm sure is armed, but with what, I can't remember.
Otherwise, the "unarmed" patrons would be: Sami, Larry(sort of), Al, Ewa, Mar(sort of), Dara and I'm fairly certain that Jasper isn't much threat with only his whittling knife.
Sorry if I missed anyone, I'm just going off of memory.