I have no idea what causes my migraines, it seems like mostly the heat triggers them, but I can get them in the winter too.

I've never been to a dr. for them, although I should, I just take Excedrin migraine, and drink a lot of Coke or Gatorade and hope for the best.
I want to try a lapu lapu (I think those are the pineapple drinks at the Poly) too! I'm not a big drinker, and I like to say I'm going to try many different drinks at WDW, but I'm like you, heat and alcohol doesn't work out for me! Although, it's not that hot in November, so I might be ok. That drink at Le Cellier will be perfect though, because I doubt I will want alcohol on our last night there!
Your Day 5 plans look great! I've never been on Primeval Whirl. I think I might try it this trip!
I had no idea they had pin trading events at Disney!