OK this is a tricky one. In the past when we have purchased FL Play 3 or 4 Passes there were some years that we upgraded to a FL res AP. (you just pay the difference)...now my question is...I have the FL resident Discovery Disney 3 day pass, does anyone know if you can upgrade to a 4 day (one additional day) after the 3 day was used? We have 1 day left on our current 3 day FL Discovery Disney pass/Ticket and I was wondering if I can add that 4th day let's say in late April for the extra $10 still? AND, does anyone know if you can upgrade these tix to APs? (i think i read you can but has to be before they expire 6/7/13) but just confirming, thx if anyone can answer.