My premed advisor's pretty good with general information (school requirements, interview details, etc), but:
1) She has way too many students, and barely tries to get to know any of them besides the premed club officers (the suck-ups).
2) She takes forever to answer your questions, and when she does, it's usually just generic information.
3) She's almost never available, or the line is way too long to see her.
As one of the above posters mentioned, I mainly used her for my committee interview, as well as my AMCAS information. I'd say go in and see your advisor at the most once a semester, but don't worry about them not knowing or remembering who you are. Just make them a baseline to make sure you're staying on track.