FMM Baja - available in LaPaz?

The need for a FMM is after a three day stay in B.C.or Sonora but changes when you cross into B.C.S., just as it does in the east, when passing from the "Free Zone." If you plan a trip, get a FMM and be done with it. TIP is also a requirement when driving into both those more distant areas. It is not easily available if your plans change and you want to take the ferry over to the mainland, where a temporary import permit is always required to go aboard. I know of a case where the couple wanted to take the ferry but could not obtain all the certification that was required. Perhaps they could have found it if they had searched better, or perhaps the fine itself was a deterrent. But they did get to the mainland, by retracing their steps north and doing hwy 15 and 200, but on the way, getting the required FMM and TIP. If time is at a premium it would be helpful to know if and where these can be obtained in BCS and meanwhile, not having an accident!