Upload & Sell: Off
For me it's generally a reflection of the time spent throughout the day. If I'm there for 7 hours at the reception, it would be weird to have only one spread of it and I think my clients would be pretty disappointed... in that they've wanted me there at the reception for a reasonable amount of time, they've communicated what elements are important during this time, so if I do anything else it would essentially be saying "screw you" to them. In your example, I imagine you weren't there for long at the reception, and it wasn't very important, and the album reflects that.
After the natural coverage (in terms of hours spent) I just try to bring emphasis to the most important parts of the day, and the 'best' photographs :-)