Question for people who have cosplayed SH Nurses

So I'm the friend lagging behind everyone else at an anime convention because her shoes ended up giving her nasty blisters. I don't want to be that person again, but I also want my cosplay to look fairly accurate.

I'll be cosplaying the Nurse, I'm worried wearing heels will give me blisters again considering the amount of walking I'll be doing at the anime convention.

I know a few real nurses who showed me what they buy for work so their feet remain comfortable, the shoes are very expensive and look out of character.

All I can think of is maybe some memory foam flats or something because those are a bit similar to the heels that the nurses wear.

What have you done to make your Nurse cosplay comfortable but accurate looking? I'm at a loss for ideas at this point and pretty oblivious about fashion.