We are participating in the Provence Canal Barge trip Oct 2-12, 2019. We booked our flight through RS. One leg of the journey is on a Air Canada Boeing 737 Max 8 from San Francisco to Montreal. So far there has been no change in the aircraft on our itinerary, although Air Canada has grounded all their Boeing 737 Max 8 planes "until further notice." Although the AC Max 8 planes may be OK'd for flight later on, they may not. Can we depend on RS to find another flight for us?