Can you warm the cheese roll

Yes better in a toaster oven then oven

Yes, I agree with William. If you put them in microwave, they will get soggy

Yes easily

Yes, just as a ready eat food You can enjoy the roll in the toaster oven toasty like as homemade cooked, not in the microwave or else they do get soggy, not enjoyable and flat

Yes but taste good when you just get them hot and ready to eat

yes you can