Ok here's the deal. We originally wanted to buy 5-day PHPs and use 4 days and one plus (BB) on this trip and save the extra day and other plus for our next trip (it seems more economical to do it this way and we had the money). However, when I went ot our local Disney store they didn't have 5 day PHP's so I broke down and just bought regular 4-day passes and figured we could pay for admission to BB. Well working the figures out it still makes more sense to have the 5-day PHPs. My question is how difficult is it to upgrade 4-day regular PHs to 5-day PHPs when we check in? Could I call the DC 800# and upgrade and apply our discount over the phone (especially seeing the increase is set for 3/19, we check in 3/24)? Which makes more sense and is easier to do? Any info is appreciated. Thanks!