I was very disappointed at SFB. Not once did I have the change characters. It was pretty long ago, but I think my party was Vaan, that lady you get with Basche, and basche.
If it was hard for you, here's what I remember:
GAMBITS! I just had the Shell, Protect, and Bravery gambits on Vaan and it was a snap.
Also, I got Vaan the Zodiac Spear pretty early. (I had to run like crazy.)
VERY disappointing. :mog: