Out of that 7% I would say a majority of them are for 1 or 2 night stays. I've had CMs tell me that is your greatest chance. Both times we were upgraded they were 1 night stays.
Several posters have reported this in the past. IIRC, it happened at both value and mod resorts. The only explanation given was that there was unexpected unavailability. If you look very closely at the Terms and Conditions, you are only guaranteed a room. Not necessarily the category of room that you have paid for. In those circumstances, I'd be asking to for a transfer to another resort at the very least.
How do you get down graded??? That doesn't seen right!!!
Just trying to do some very non-scientific research here
Can you post your number of on site stays followed by number of times you have been upgraded? I am thinking this only happens 5-10% of the time. No need to write where/when/type of upgrade
I will start