I made a recipe with fresh sweet potatoes last year - on Thanksgiving day.  It was time consuming and I'd like to do what I can ahead.  The recipe also has alcohol in the casserole.  Can I peel, cut and freeze or refrigerate the slices ahead - and if so - which one - freeze or refrigerate.  Also how much in advance  Can I go beyond that - to make the whole thing - brown sugar, bourbon - etc. ahead - what is best to do ahead and how long ahead can I do it.   THANKS 
It would help to have the entire recipe, but in general, any sweet potato casserole can be made ahead in its entirety, chilled and refrigerated, even a couple of days in advance. Then, on the day of the meal, just reheat in the oven. 