Question 1
http://www.easycdg.com/pages/cdg_airport_hotelspag.html
Scroll down to the bottom of the page for the list of pick-up points in the various concourses within CDG2.
For 2E and 2F, it is a joint pick-up point in the
Galerie that links 2F and 2F landside, with large photographs of General de Gaulle on the sides. On the West side of the
Galerie (facing the Sheraton) IIRC.
Question 2
Close to the above-mentioned location.
Galerie 3, rather than
Galerie 4.