Just noticed in a post above that somebody got the new Envoy Suites between FCO and CLT. Does anyone have a feel for whether this is common or not?

We are booked CLT-FCO-CLT in June. On the one hand, I would love to try the suites for sure. However, there are three of us and I assume a change from the 300 to the 200 would potentially put member(s) of our party at risk for a bump back to coach. Any thoughts or advice for insurance against such a possibility?