I think if they aren't busy, they will take other peoples pictures at that photostation in Exposition Hall, but BBB girl's get priority.
We weren't told to try the rose garden either. I don't even know where the rose garden is? We did however go to get the photoshoot done and we had the cheapest package - they just added it to our photopass. I didn't get the CD because there weren't many pictures on our photopass overall that we didn't have on our camera - but because we had been in at the
MNSSHP and got a photopass card there - I got 40% off on the picutures I did order, so it was a better deal than having them printed at Disney.
As for african american hair - there used to be a couple of FGMIT'ing that posted, so hopefully they can answer. I know the question was asked on the original thread (I'll find the link shortly) and they said they have no issues working with any hair type and in the Original thread there was a picture of a beautiful little girl who had been there. But, she didn't have braids I don't think. The braids will work well for the diva I would think, not sure about the fairytail princess though.