Yeah, I've done it. You'll be fine but like others said, take it kind of easy or maybe a bit slower than usual because you will get drunker way faster. Enjoy a night of cheap drinking haha.
idk if its dangerous or not, probably is, but ive done it before. youre gonna get drunk off like 4 or 5 beers and pass out mad early. really not that fun, id just smoke
its straight, in highschool we would all make a point to get drunk after giving blood because you get drunk so much faster. Stick to beer tho, no need for the hard shit