Hey Rosie, I'm from the UK and did the ICP summer 2012. I loved it!
If you want to send me a private message, I will send you my FB info if you have any further questions/wanna see some photos
I have friends who have done all of those areas and I myself worked in Merchandise.
I worked in Merchandise on Main Street USA (at the Emporium) at the Magic Kingdom. I loved my job - though the pros and cons of each role are also dependent on where you work. For instance, all my shifts were evening shifts. My average finish was around 1-2am, with some finishes being 4.30am at the height of summer. My friend in Merch who worked at Animal Kingdom, never finished past 9pm! - Sometimes my shifts wouldn't even start till 10pm!
My role in Magic Kingdom merch meant long hours - quite a lot of 10-12+ hour shifts. Some days the hours ARE rough (especially when you are stocking - on your feet all day) but it is so worth it.
For me, merch in the Magic Kingdom was being at the heart of the magic. In other roles, you don't necessarily get the freedom to have long discussions with guests whereas in Merchandise it is openly encouraged. I loved creating magical moments for people!
Depending on how you look at it, in my specific location, I was also trained in 'baby care'. Basically, you work in a section of the park next to First Aid and accomodate lost children/parents trying to find lost children as well as sell a few baby-related products, cleaning the changing rooms etc. Obviously for those not comfortable with young children, it isn't great, but I always found myself with late shifts (all the ICPs work late shifts) and late at night, you don't have many kids in the park. So I got to watch Disney movies whilst cleaning up a kids play room - not bad
It's so hard to think of pros and cons - there are however so many pros that outweigh the cons. The only cons I can think of are the long, late hours (it was hard to meet up with my friends outside of Magic Kingdom merch/out door food and bev, as they had similar hours); standing on your feet all day and the bus to work (which takes about 30-40 mins - at least, then another bus before a long walk to where you actually begin your shift).
I would totally encourage Merchandise - I had so much fun!
Good luck
