If I have a benign brain tumor, and I've been off meds for a good 5 days now. Is it ok for me to drink alcohol?

Tough question. Since alcohol interacts with many medications and the brain functions, it is important that you discuss this question with your personal neurologist/neurosurgeon. I typically allow my patients to drink in moderation (no more than 1 drink a night) 6-12 months after being off all brain related medications. But again, please see your personal physician before acting on my suggestion.