In my opinion, interplanetary maneuver drives are ... underappreciated ... by most Players and Referees using
Traveller.
Not all "adventures" need to be interstellar, or require jump drives.
Sometimes it can be quite interesting to have a "maneuver only" campaign setting within a single star system.
Depending on "how things go" in the campaign, you can always "upgrade" to being interstellar with a starship later ...