space is real time.
transition between space and surface, it's likely to be a period of time to do that. Possibly up to a few hours to transition by space elevator or similar device. There are "dropships" though, that can make a rapid insertion onto a planet, but those are mostly military in origin, so are unlikely to be a comfortable way to travel.
It's why RP events are 'easier' to be on a station, rather than planet, for the sake of people just dropping by, rather than everyone having to gather at a specific time.