The FAA BFR format is down to you and the instructor. It's usually an hour of "classroom" stuff, and an hour's flying. Certainly nothing like as difficult as a GFT.
If you're a safe, competent pilot then you'll have no problem.
BUT ... I would recommend getting to know your way round the FARs and US Sectional and Terminal charts. There are some bits of the FARs that you need to know "off pat" (eg VFR minima); for most of it, knowing where to look it up will usually suffice.