When I get Halo Anniversary is there any way to be able to put my Reach disk in and still play on the Anniversary maps without having to buy them for Reach?
Yes. The Anniversary case comes w/ the free download code for the maps.
Oh okay awesome! I just have to go to redeem code and type it in?
Just like any download code. Redeem code and bingo! Its a pretty large downlod though. Takes a good 30mins to an hour.