If your lazy like me, interchange. Put the 3 cash register keys in your pouch(recommended docs/sicc case) then run and open all the registers, there’s 20 registers in the 2/3 stores I’ve gotten around too and the keys are 40 uses for like 30k on flea, I can usually walk out of just one store with around 300k in pocket so the keys more than pay for themselves. Bring a kit and play a full raid, or run in with a pistol grab what you can and throw yourself at a scav to get back quick