travel mode and time between CDG and Paris Gare Lyon

What's near? On the airport? If not, what's the name of the place or the address?

Please translate your code. What does TGK mean? Google offers no clue. As for your main question, it's a lot easier to take a hotel in the area between Gare de Lyon and Bastille, and certainly more interesting than the anonymous hotel strips under Charles De Gaulle's flight paths. Rapid transit connections between Roissy hotels and that train station are awkward, although fairly straightforward. By staying near the station you will also get to sleep in considerably later.

What day of the week is this? If it's a weekday, probably using RER train into Paris with metro connection to the station. I would think rush hour traffic might be an issue otherwise. If it's a weekend, a taxi might be easier. I'm not sure how early RER trains start on the weekend. I, personally, would count about 15-20 min. from the time you get to the station (assuming you already have your tix) to find your platform, validate your tickets and find your car. It usually takes 45 min. to get into the city from the airport in a taxi. Is it worth checking to see if staying closer to the station is an option?

Thank you for the replies. We are staying at the Best Western Paris Cdg Airport, 1 Allee Du Verger, 95700 Roissy-en-France. We will be going to Gare Lyon on Satuday morning, Apr. 28.

Take a taxi to one of the RER stations at CDG. CDG 1 is next to Terminal 3 and CDG 2 TGV is at Terminal 2. Take the RER B to Gare du Nord. Transfer to the RER D and take it to Gare de Lyon. If you leave CDG no later than 06:15, you'll be at Gare de Lyon before 07:15. That will give you at least 30 minutes to find your train.