UGA79...The original poster inquired about going to the school at Millington, not orientation. The school is in Tennessee, OP lives in Virginia. The OP will have to go back to Virginia to get his CDL and then will most likely go to orientation in Martinsburg.
I talked to my friend yesterday and asked him on this same topic.. He lives up north, around 70-80 miles from the Phx terminal, was told to turn in reciept to his DM, he did and was reimbursed the cost of getting TO the terminal, not back n forth on breaks, etc.. So YES keep reciepts and turn them in..