@ bostonphil7....I leave the same month as you, arriving most gladly at CDG after that 11 hour Basic Economy , non-stop haul from SFO on the morning of May 27.
You're a first time visitor to CDG, As such, hopefully, CDG meets with your approval coming away with a satisfactory experience Be advised that the place is big, may seem daunting, overwhelming and all that but look at it this way ...so what?
Keep your eyes focused on the signs and their directions, be it the location of the WC, baggage claim, exit, the RER B (Terminal 2) station to Gare du Nord, etc. In contrast to 2024, CDG in 2025 seemed to me much more organised and complete, eg, empty spaces I saw in 2024 were in 2025 occupied by ticket machines with their helpers/trouble-shooters , all English speaking, obviously . standing by to render assistance. Lots of people depend on them to have their questions answered. You'll see that too, bewildered and clueless or their phones don't work or credit cards when payning.
Be prepared too that not only is CDG big , spacious, and may be daunting to you since it is your introduction to this airport, the place is crowded, tons of people all over, inundated with people coming at you every which way...but , so what? I go in the summer, ie the end May, and being swamped is to be expected. Be prepared mentally to tackle these swarms of people, so to speak, as you enter the airport after Immigration.
At Immigration: Have I run into a scanner there not working, yes, twice...just get the attention of a "helper." and say , "marche pas" . You'll be directed to go another scanner, if that one doesn't work either, very bad luck, you have a problem.
None of these little things faze me, at least not in CDG. Be focused, be glad you're there, period, pay attention, above all, don't allow yourself to get distracted.
The new CDG is more spacious, so it seems. Lots of young "helpers" around in their red smocks moving around, not only in ticket machine areas, to help. Take a rest , once or twice, after passport check and baggage claim, soak up the vibes in CDG, unless you're really pressed for time to get out of CDG. Arriving shortly before noon , I'm in no rush to get out of CDG.
Last summer I made a definite effort to explore the airport as if it were a tourist sight , checking it out, noting this and that, noting certain landmarks, ie certain businesses location, timing on foot getting from A to B, all with luggage in tow, (you'll need this info on the return, ) and the next arrival !