The very short version of the story is that I have no choice but to move my 55 gallon tank across the room.

A friend will be here tomorrow, hopefully he can help my husband move it (I am not allowed to lift right now). I need to try and make it lose some weight, which I think I can do by removing some sub one spoonful at a time. I also plan on taking the pools out completely during the shift.
Here's my question. Without unpacking a tote or buying another one, the only thing I have available that I can put sub in that I can close up so it won't dry out is a styrofoam cooler previously used to ship medications in. Is that going to be safe? Also, should I leave the crabs that are out and about in there, or would it be better to move them to iso? Not certain how many that might be, I usually only see one or two at a time. My iso is just 10 gallons, but hopefully it would just be until tomorrow.