Encourage a slow pace when the tributes are being read. You want to savor each one.
These will be important to the guest of honor. Its unlikely they will want to rush through them. Each one will seem like a sweet piece of candy.
So don't let anyone rush things along too much. If a guest gets bored send them to the TV or let them leave. "Gee, I see you are in a hurry, if you have to leave I understand. This reading is important and I think its going to take a little longer."