Ugh. We even have a 50 amp outlet in our garage but the way the rv is posisitioned I would have to turn it around and back it in to make it reach. We strung together some adapters last year but that didn't work, I can't remember what the reason was or what happened but I remember being told that those adapters might have a short and that might have caused the whatever it was that happened.
Not sure if I would want to attempt to back out of the driveway and turn it around and back it in with two slides haning out blocking the mirrors. Not worth the risk.