Prior to this trip, we weren't allowed to be seated until our whole party was present (well, in our *one* attempt to do so at Mama Melrose!). However, in August, I was separated from DH twice, and both times was offered to be seated before he arrived. The first time was for dinner at H&V. DD and I were at DHS while DH & DS went to Disneyquest. DD & I arrived at H&V on time - no sign of DH/DS. I waited until 5 minutes past our reservation time and started to get worried (it was the Fantasmic Package and I didn't wnat our reservation cancelled on us!). I asked at the podium what we should do, and they offered to let us check in, get seated and started and DH/DS could catch up with us when they arrived. I decided against this as DH is not always sensible and I had visions of him arriving at H&V and not thinking to ask at the podium if we were already seated - he'd be more likely to just wait and wait and wait for us!
So we just checked in and waited. Fortunately they turned up 5 minutes after that.
The second time, the kids and I were waiting at Tusker House for lunch. DH had gone off to get FPs. It started to POUR with rain, so I decided to try to get us checked in. They offered to seat us immediately without DH. Fortunately I turned around & there he was, but we would have gone in without him that time!