That raises an even more fundamental question – once that I don’t think is touched on in the rules, and so is up to us, one way or another.
Do we have artificial gravity in this setting?
In other words, one answer to your question,
is, “Just like Quark’s.” Or Ten-Forward. Or the place where the tribble-triggered bar brawl happened.
Assume cheap anti-grav (which affects ground transportation, but let’s just talk about environmental gravplates), and there’s no reason to have zero-gee space bars at the hub of the spinning station. Or, for that matter, a spinning station (or spin compartments on your ship). Even spacers and space miners and the like are probably going to have grav in their ships, just to make life easier and avoid physiological issues.
Now, there may well be zero-gee xenos out there, but it’s as likely that we only need to deal with low-gee or high-gee xenos, which can also be dealt with.
My inclination is to go with artificial gravity tech, just to simplify things. We’ll sooner or later be dealing with different gravity situation, but not worrying about it as the norm seems most straightforward.
