We have 1 minute from receiving the dispatch to going enroute. In the worst case scenario we canm ake that easily. I've been in the far back of a store and made it from my position to my ambulance in 1 minute 30 something seconds. Essentially you hear your sector/squad get toned out and you immediately start moving towards where you parked. Would I ever go to get my hair cut, go to the doctor, etc. No, hell no. But I'll certainly get some shopping done or something like that. Last week I needed to pick up breaks for my car, we got a lull in the day and ran up to Autozone, I picked up my car parts and put them in the truck and we went back. No biggie.
I'm also on duty 12-36 hours a day and that makes a huge difference. Me personally, I don't take my boots off unless I'm on an overnight shift. Some of my co-workers though take off their boots, socks, undo their belt, and take off their uniform shirt to lay down. It's a 5 minute ordeal for them to get up and make a call.