I did end up pulling the trigger on the event package. I like that it is more flexible than booking through DLRP directly - we have 3 nights at Art of Marvel, but only 2-day hoppers plus the hard-ticket event, which I think will work nicely since DLRP is our first destination after arriving in Europe and we'll probably want arrival day to adjust to the time difference. I know we're not likely to have time to see and do everything but from what I've read I think we'll have time for the highlights and the things that are unique to the Paris parks, which is what's most important to me, and I love that summer park hours there seem to be a little more night owl-friendly than at the US parks.
So now it is on to waiting for news on restaurant reopenings - I really want to try Walt's! - and pesky details like booking the real world parts of the trip (Paris, UK and Ireland for a revolving cast of up to 7 at times!).