HI Randall, the conference will start at 4 PM on the 28th. Nuevo Mundo Expeditions (see Julieta’s contact info above) will offer optional tours the morning of the 28th to either Old Town Quito or the equator marking. I think they will charge $45 for these. Julieta will know for sure. (Old Town Quito is not to be missed when you visit, in my opinion — it’s fabulous.) There is no minimum number of attendees for the conference — does that answer your question?? If you have questions about the conference, you can call Donna at 866-381-8446.