Hey I just need someone to clarify for me - got the game last night and loving it, but it told me to input a code to install the MP maps so I could play them on my Reach disk, but I don’t seem to have a code for that anywhere, only a 48hr gold trial, 2 avatar items and the Grunt Funeral skull code 
I don’t want to keep swapping disks, any suggestions?
Cheers 