"White glove" sounds luxurious. Sometimes it means two people bring the piece in, assemble it, and haul the packaging away. Sometimes it means a truck shows up, takes one look at your stairs, gravel lane, or loft ladder, and leaves a crate where the driver can safely stop. This decoder tells you which version you are probably buying.
Curbside / threshold usually means the truck gets it off the truck and your problem starts there. Inside delivery often means just past the door, not necessarily upstairs, around a hard corner, or fully uncrated. Room of choice usually means placement in a requested room if the route is safe and obvious, but often still in packaging and often with sharp limits on stairs, old-floor risk, or weird cottage access. White glove is the broadest marketing term and the sloppiest one. Some sellers mean full setup. Others mean room placement plus better scheduling and nothing more.
If the piece is one-piece, heavy, and headed up stairs or through cottage weirdness, the safe assumption is refusal until proven otherwise. If you want certainty, either get the route and scope confirmed in writing or buy a knockdown version from a seller who has done this exact kind of delivery before.