A straightforward roller swap on a door in decent shape, no track replacement needed, is usually a same-visit job. Add track straightening or bracket re-anchoring - which, as noted above, comes up more often on the older stock in this area - and the visit runs longer because we're re-leveling the door's travel path, not just swapping parts.
We travel out from Tukwila for every job in East Renton Highlands, so there's no local branch adding flexibility to scheduling - what we can tell you is the on-site work itself, once we're there, rarely stretches past a couple hours even with track adjustment included. What we won't do is rush a re-anchor on an old bracket just to hit a shorter number; a track that's not properly secured is a comeback call waiting to happen.