I should probably rewrite and make it more clear, but if your Guests can't meet either of the B or C conditions then roll the die and the next A event you arrive at is what's behind the locked door. So if you rolled a 4, it would be 10A.
OK! That’s what I was going to do, but I wanted to double check! Thank you so much for the response :) can’t wait to play it some more tonight!
Thank you for playing!