We've never assembled the loaf days in advance, but we think it would likely be ok for a few days in the refrigerator? (acouplecooks.com)
The jar above on the left is the pickled vegetables just after I made them and the one on the right is after a few days in the refrigerator. (mylifecookbook.com)
You probably won't eat the entire amount of broccoli slaw with the fish tacos, but the slaw will keep for a few days in the refrigerator. (onedishkitchen.com)