It is a very tight fit, and they would have to bypass some air filtration system machines in the vents. They are currently operational and humming, given they're an essential function on the ship, and Frisk would only make it so far before being stopped by one of these devices. However, they could peer through the vents to see into some storage spaces adjacent to the lounge, which contain even more games, along with some blankets and pillows! It looks like you can raid this room and get some supplies to set up camp in the lounge, if you so choose.