No Clue...
When our room maked Caribou Lou last weekend,
We had a 1.5 gals of Pinapple Juice
Fifth (750mL) of Malibu Rum
Fifth of 151
With us 4, and probably 4 others drinking a couple cups here and there...we went through it in a night.
I'm assuming you can scale that down, I never had that particular recipe. The only "apple pie" we made was for a 9 hole shot event and we used a fifth of goldschlager and apple pucker....shit was so good you could have a cup of it and enjoy it.