Can a bathtub be reglazed/refinished more than once?

My tub and ceramic tile tub surround was refinished 10 or 12 years ago. It is beginning to show age. There are spots that are pealing revealing the old surface. I am trying to avoid replacing the tub, as I would also have to replace the ceramic tile in the tub enclosure. I would probably also have to replace the ceramic tile floor as the new tub footprint would likely be smaller than the existing.