My guess is that he assumed he'd be caught early, wasn't, and then got a bit overwhelmed with the reality of staying on the loose. That would've been overwhelming: finding places to sleep, transport, eating, etc. A gun and ID might've felt like tools that still had use, so he was yet to discard them.
Why you'd eat-in at a fast food place rather than just go via some low level Chinese takeaway though!
Why you'd eat-in at a fast food place rather than just go via some low level Chinese takeaway though!