Arriving at CDG at 5pm means you won't be at the hotel/parks until 7-8pm at the earliest.
We went last August for 4 nights and arrived at CDG at 5pm. We weren't eating until after 9 (Rainforest Cafe) as there was a crazy queue for customs once we got off the plane.
We had a fab time, but it was crazy busy.
IMO the illuminations are absolutely NOT worth keeping young kids up so late. Especially in August when it is so busy. Prioritise the extra magic time in the mornings and skip the illuminations. You can get so much done in EMT. Our only regret was staying up for them because we were all too exhausted for EMT the next morning and that was a real waste. We left halfway through the illuminations after waiting so long, due to the incredibly rude behaviour of others around us, elbowing and shoving. One woman actually stood on our buggy and almost broke my camera in the process.
I wasn't a fan of the hotel breakfast and Rainforest Cafe was fine but nothing special. We liked Annettes. Though the weather was so warm when we were there none of us had much of an apetite and we ended up not using all our meal plan vouchers.
Make a rough plan of your must do's and have an idea of each day. This will almost definitely change, but it can be really overwhelming so having a plan helps. I probably overplanned and I was still really overwhelmed for the first day.
We went Mon-Fri so our week looked like this,
Monday: Arrived CDG at 5pm, got to hotel, checked in, left bags in room, got shuttle bus to village, had dinner in Rainforest Cafe and had a look in a couple of shops, then back to hotel and bed.
Tuesday: Breakfast at hotel, went to the main park for EMT, lunch was Annettes, stayed in the main park until late afternoon, back to hotel for dinner and then early night.
Wednesday: Skipped breakfast at hotel, just ate snacks in the room and went to the Studio's park and queued for EMT. We got so much done this morning, and were done in the Studio's park by lunchtime (we even watched Mickey and the Magician in this time.) Back to the hotel for a break, and then went to the main park to wait for the illuminations.
Thursday: Too tired for EMT, breakfast at McDonalds, better look around village shops, went to main park for a few hours but this day was crazy temps and it was the busiest day so far so we gave up around 2.30 and went back to the hotel to cool off. Dinner was at Cafe Mickey in the village. This was the highlight of the trip though we only got to meet 3 characters. I have read online its usually atleast 4. Kids were delighted though.
Friday: Up super early, packed our things, breakfast at hotel, queued for EMT at main park. Left main park at 11am, had another quick trip to the shops in the village to buy souvenirs, and then we went back to the hotel to get our bags and wait for the bus back to CDG. We left about two hours earlier than the shuttle recommended and we were glad we did because the queues in CDG were really awful.
We got to do almost all the rides we wanted to multiple times. We weren't big on meeting loads of characters so we only queued for Goofy in the parks. We saw the parade, and the special show they had going on. Mickey and the Magician was really special, I would really recommend, though we really didn't like the queuing system for it.
Sorry for the essay lol we really had such a great time, and I miss the anticipation and excitement we had in the run up, planning it all.