I have never had the booze glitch out so I'm going to guess that it's something you are doing in game.
First question, are you playing solo or co-op?
You can't carry booze and candy at the same time, nor can you carry booze/candy and the jail cell key at the same time. So what happens a lot (especially in co-op) is someone has the booze, then goes to get the jail cell key, not realizing that when they pick up the key...... the booze drops.
Booze and Candy are often lost around the map when a player picks up the jail cell key. You can find it again if you re-trace your steps.
Also, booze, candy and key are dropped on the ground when a player carrying it goes down.... so you might have to check those spots too.
Ah that could be whats happening, thanks for the response guys. I knew you couldnt have the candy and booze at the same time but I think that it could easily be the picking up of the jail key or the chalk outline. Hadn't noticed it dropping at those specific times but could be a strong possibility. With the map being so dark in places I probably missed it when I went around looking for it to see if I had indeed dropped it. I will try this again and see if thats whats happening.
Much appreciated for the response guys. Now hopefully I can get in the haunted house now!!