We've done it for a few days in a few places that supplied power. The only hassle was grey water discharge that went directly overboard (the galley sink); we turned the other grey water sump pumps as well as the bilge pumps off, having sumps that overflowed into the bilge. These were yards that had showers available, and during temperate weather, though we had a couple of fans and ceramic heaters if we needed them. The biggest hassle was the very tall ladder needed, though we were in one yard, Thunderbolt in Savannah, that supplied a big rolling metal stairway; we were almost the smallest boat in there so they had them for the megayachts. The next biggest hassle was workmen showing up early in the morning and us generally being in the way. For extended hauls, we stayed in a motel and used the time to explore the surrounding areas.