But don't the blow dryers get plugged into those kinds of outlets, with the safety shut off? So you could plug a toaster into the outlet at the sink.
At home, yes, there are GFI outlets next to sinks in both kitchens and bathrooms. Yes, you can plug hair dryers, toasters, etc. into GFI outlets.
The difference between a blow dryer and a toaster is in the toaster there is an extra added element of fire, due to a crumb becoming an ember which continues to burn, even after the toaster has been turned off. Add to it, that a PP puts it in a tote bag before they leave the room - that ember could continue to burn the toaster and the tote bag and start a fire. Luckily, all the rooms have sprinklers as provided by code, and it would most likely put the fire out before doing massive damage to other rooms.
If toasters were allowed in the standard rooms, then the resort would provide them. All appliances provided by the resort would put the liability of ensuring the appliance was in sound working order and would not cause any undue damage on the resort - if it didn't work for some reason, then the resort would be liable for damages.
Now, if you are bringing an appliance from home, because it is not provided in the room or allowed in the room, you are now assuming the liability. The resort does not have any control over the use and the age of the appliance, or what occurs when you are in/not in the room.
If you use the toaster, in a room where the resort does not provide it, and there is an ember which continues to burn after you leave the room, and it causes a fire - you take on the liability of the damage and the resort is no longer at fault.