One idea the planners are discussing is identifying some of the local attractions for visitors with some extra time to spend in Ontario. With a little planning and coordination, we could arrange those things as meeting opportunities for reunion-goers to meet each other prior to the reunion itself. Instead of site-seeing individually, go as an OLIN group.
One comment that repeatedly comes out of these 5-year reunions: "I wish we had more time together."
By scheduling such informal group activities on either side of the official reunion, that wish could be addressed to some extent.