Advice: D&D Mapping
Yup, that will vary with the GM's ideas and preferences.
Since I am a tactical player, I also am a tactical GM. I like to create elaborate maps (map maker software, photoshop, moveable tokens, illumination, etc.) to manage a fight. Personally, I like to have the enhancement to the imagination by having a close enough facsimile of the location, and it gives me a good sense of tactical possibilities in the scenario. But that's just me.
The price I pay for that benefit is hours and hours of map drafting and crafting. But I also enjoy it, so there is that. =)