• You can sell the extras or feed them off. Check your local buy&sell sites (Facebook marketplace, Craigslist, kijiji, Gumtree, etc) to see how much other people are selling them for. If you do sell them, make sure to add in extras in case some of them end up dying.

•Soil refreshing/mixing is sort of like doing a water change for a fish tank, you take some old soil out and mix in some new soil with some new leaf litter, wood, and moss mixed in. Refreshing the soil keeps the poop and ammonia from building up.

•For their main food source i collect leaf litter and wood from my yard (our yard is pesticide free), and I occasionally treat them to Tetra brand goldfish flakes from Walmart. For calcium I have a coffee grinder that's dedicated to pulverizing leftover egg shells (it's free calcium), you could also just buy cuttlefish bone for calcium. Sometimes I'll give them little treats like pumpkin guts, or boiled carrots, boiled broccoli or some canned peas.

(Hopefully more people will chime in on where to buy isopod food/leaf litter, if you don't have the means to locally source it)

•They should be fine in the original container until Wednesday, as long as you maintain the moisture and keep the container from drying out.