@Mary696 I would guess you want to do it the other way, deny full use to the guests who are more likely to cook, which is longer term, at least that is my experience, people who come for 2/3 days almost never cook unless it's a family w/young children. But I'd agree that make it 'light use' as @Linda108 suggests...make coffee, boil water, use the microwave, I would guess the toaster was probably a one off deal, and so you could probably let them use the toaster too.
FYI, my kitchen anecdote, I had bought a set of truly beautiful used pots/pans for the unit--heavy, stainless, riveted with heating coil on the bottom, as one of the periodic upgrades, after we had finally retired the random old stuff we had in there. At about the 4th time these wonderful pots/pans were burned with food left in them, that was the end of that. The beautiful set came upstairs to my kitchen and I bought a cheap new set for the guests, at the same cost.