I can't comment extensively on how else it may be possible to travel between Milliways apart from via the bar, says the bar. Universes differ in an enormous number of respects and there is an unlimited number. The existence of Pokémon is a comparatively minor one.

"Do people who pick up Security jobs get doors more often so they can show up to work?" wonders the girl.

That sometimes happens, but it is not a guarantee.