Due to construction along the RER B, you won't be able to go from central Paris out to the airport as normal on Saturday and Sunday Feb 17 and 18. (They will be running shuttle bus replacements along the part of the track, so you can actually get to the airport , but it will take a lot longer, so plan accordingly!
(Same closures on weekend of Feb 24-25, too.)
In addition, on Saturday 2/17 the "VTC" drivers (Uber, Lyft, etc) are staging a strike, including protest action , where they're going to block the road accesses in to the city with their "opération escargot" tactics (go-slow and keep the roads as blocked as possible).
So allow LOTS of time to/from CDG/Roissy this weekend. Sorry for the bad news. Hopefully the VTC/Uber strike won't be so bad, I'll try to update tomorrow.