FB, when I had my ankle surgery I was met by a physio after with a pair of elbow crutches (much better than the normal ones IMO - you can do stuff with your hands and still have the crutches there when you need them, and also if you have hips, as I do, you will hurt yourself a lot less using them). She actually made me walk down the hall in them and then climb stairs in them, to make sure I knew what I was doing. Having broken my leg as a child I'm no stranger to crutches, but I drew the line on the six stair up for fear of falling down them (that's how the last ankle injury happened). Told her my house was on the flat, and I work in a hospital, so stairs are avoidable.
Others may correct me here, but I don't think there's any reason not to rest your sore foot on the ground while "crutching" other than pain. It's not like you have a broken bone or anything.
I do have a strong memory of the acute and painful learning curve my shoulder muscles went through on the first few days after I got home from hospital. But I also stayed at home for three weeks except when some lovely friends would come by and take me somewhere.
I'd probably stick to using cars or taxis. Public transport is probably not your friend because of the extra walking that's involved which you don't think about until you have some sort of impairment.
The other option is to hire a wheelchair or better yet an electric wheelchair to get around in if you must use PT.
ETA: if you are travelling, get on the blower to the airlines now and inform them that you will need help through the airports. You'll most likely feel like you are taking the p*ss, since your "handicap" is only temporary and you are not used to such treatment, but it makes a massive difference not having to make your way through airport corridors on crutches. I flew PER-BNE and back with QF assistance and cannot fault the treatment I had on this trip. (though the cranelift used to get me out of the plane in PER was a bit OTT and cringeworthy, because there was no jetway on that flight)