If the payload is small enough (compared to FH), will it be possible to SSTO? Then you could park in LEO, and return to LZ when it's clear! Edit: no. Falcon He

If the payload is small enough (compared to FH), will it be possible to SSTO? Then you could park in LEO, and return to LZ when it's clear! Edit: no. Falcon Heavy has more than one stage.