Concerning your doors locking, the short answer is yes, Yes, YES. Had a similar problem last summer when I traveled solo from South Carolina to Idaho during my over night stops. Once I got parked, it was better but after driving a 600 mile day, I was just a bit too tired to go for the very best level I could, seeing that I was going to be up early the next morning.
Bill & Anne + FBs Athena, Jada & Cupcake
Wilson III: 2015 Ram 2500 6.4L Gas 4x4 4.10 CC SRW
Gypsy II: 2013 Kodiak 279RBSL with table & chairs instead of a dinette