Just back after a short break & want to leave some observations.
The Disney shuttle would have been, for 2 aduts & 2 children, €58 each way, CDG to Holiday Inn. We chose to use a private service for €75 each way. This has 2 advantages - potentially less waiting at CDG for next available shuttle and, on return, we could spend more of Saturday at the park and not have to return to hotel for last Disney shuttle.
We arrived Wednesday and queue times were 15/30 minutes. On Saturday they were 45/90 minutes so avoid weekend if you can.
I thought we could be 'clever' and get Fastpass tickets for concurrent times, but the Disney ticketing system is wise to that.
Eating at the park, and at Disney Village, is very expensive for what you get. I had heard this before going but it's still a slap in the face when you see the cost of what you get. We ate in the Rainforest Cafe and I paid about €18 for a very average burger. And €3.80 for a glass of Coke.
In the Holiday Inn, The cost of a pint of draught Carlsberg was €7.00.
We had talked about spending the last day in Val d'Europe or even a day trip to central Paris but we would have missed out on some Park stuff, so IMHO you need at least 3 days to do justice to the Park & Studios.
Our kids are 6 & 4 and they loved it all and never got tired or cranky. The weather was cold, then wet but that didn't spoil it for them, or us.