I did quite a bit of acid back in the day. In my personal experience, I would not count on being able to function on LSD.
When I did it alone, by myself, I was always able to pull myself together enough to do simple things, like put on a movie, or cook a frozen pizza, even if it took a while. But around others, all that went out the window especially when it came to decision making. LSD severely inhibits my ability to form decisions. If someone asked me if we should go to the park or the beach once the LSD took hold, it became nearly impossible to maintain the agency required to decide without taking half an hour. This is especially bad when I was with others that also took LSD. We made a point out of deciding what to do before taking the LSD, otherwise we'd get caught in the loop for hours trying to form a decision and a consensus. Write in on a piece of paper, put it in your pocket, and when THAT happens, just look at the paper and go with it.