Yup that's pretty much it...
Highlights of Dubrillion:
Lando Calrissian's Mining Operation (for a very short period during the NJO). A truly legitamate business as far as Lando is concerned, it is later evacuated and destroyed by the Yuzhaan Vong.
Lando's Asteroid Obstacle Course. A variety of TIEs can be flown through a heavy, constantly changing asteroid field. The TIEs are protected by super heavy shields projected onto the TIEs from a nearby space station. Of particular amusement are the TIE bombers, in which a pair of pilots fly in tandem.
The Shield Ships. Dubrillion's sun is particularly harsh. Incoming starships must be escorted by umbrella-shaped shield ships to protect them from Dubrillion's sun.