You may go anywhere within the proximity of the guard house. There are 4 places you can go.
1. Guard House -- The guard house is the small building. It has food and a few weapons inside, if you want to stock up. It also has a few battle droids inside.
2. Martumbla Nuv -- Big big tree, excellent for sniping, for which the Vyylians called it Martumbla Nuv (Vyylian for "Sniper Tree"😉. It has a little fortress near the top. 3 or 4 Vyylians are in there and some sniper rifles.
3. MechLabs -- The place where Vyylosk's finest (and loyal to the Prime Minister) droid and weapon developers work. There they are working on P-2, P-3, P-4, the upgrading of the SEC (Super Electron Cannon), and the new MechLabs K-40, a powerful blaster rifle with a lightbayonet (lightsaber technology) on the end.
4. Guard House (outside) -- The front porch of the guard house. A few blasters in a rack and the current position of EET-5 and the rest of you. Chat with EET-5 or Raskae. EET actually has the ability to carry on a conversation, though he has the droning voice of any other battle droid.