We are not snackers, so seldom use any snack credits down there, so always go to Goofy's on our last day to use up all our snack credits.
This past Feb, my husband and I took our 3 y/o GS down there on the DxDDP. We only used a snack credit one day for three kaki goris, so on our last day we had 39 snack credits to use up.

Of course they don't differentiate between adult and kids snack credits, so had 42 snack credits, with even my 3 y/o GS getting 14 snack credits for the week. We went into Goofy's that last day and I told my husband to grab 19 snacks while I got a basket and took my GS and we got 20 snacks. Late that night when we got to my house and my son and D-I-L was getting ready to take my GS back to their house, he suddenly remembered his snacks (which we had put in my carry on) and threw a fit for them. When I unzipped my carry on, my son said "What the heck did you buy all those for?" I had to explain snack credits and the DxDDP. He said it was a waste, but told my GS to go ahead and get "just a few". Together we pulled out 13 that I knew he'd like, but then he said some of the others were his too. That very tiny 3 y/o walked out of my house that night carrying 20 snacks, including larger bags of gummy worms, jelly beans, cherry sours, big cookies, bags of Mickey head goldfish, etc. His parents do not keep alot of sweets in the house, so this kid is not normally a big sweet eater, so it was funny seeing him fight his dad over what he considered
his snacks. He kept saying, "but they're
my snack credits. I
have to take them. I'll take them to daycare and share them, but they're
mine". We were all too busy laughing at him and didn't have the heart to tell him that only 13 of those 20 were 'technically' his and the other 7 were 'technically' Nana's and BoPop's. lol I talked to my D-I-L a week later and asked if he'd taken them to day care and gotten rid of them. She told me he took a few of the bags for his little class and they had all eaten a few at home, then she had given some to her parents, but they
still had snacks left. "Thanks alot, I've been trying to lose weight!" lol
To OP: one warning, mutliple times I've used snack credits to get several pieces of fudge. They always put it all in one box and almost every single time, I've had the TSA agents at MCO open that box (something about the density of the fudge). They've never given me any problem with it and have never even touched the fudge itself, but they just want to look at it.