Can I pose one disabled toilet scenario where I genuinely never know what to do and feel bad about every choice - seems like the most appropriate thread for a MN jury on this 
It's a local supermarket. The door to the toilets is right in the middle of an aisle/shelves. Through that door it's a narrow corridor, with the doors to the men's, women's and disabled loos, in that order. The doors through to the women's loos are two fire doors, at right angles. I've tried, and I know plenty of other people that try, but it's pretty much impossible to get a pushchair through them (I know someone who once got stuck
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Now you could get the baby or toddler out and hold them while you pee, which despite me complaining earlier about not knowing how to undo my jeans, is definitely better than using a disabled loo. But if you did that, the only place to leave your pushchair is either in the narrow corridor, so blocking the whole corridor for everyone (you can't leave it at the end as that would block the disabled loo door), or right outside the very first door to the loos, so in the middle of the supermarket - and there's no wall space by the doors, so you would be leaving a pushchair that blocked the fruit and veg aisle, and looking like it was abandoned. I suppose you could fold the pushchair up and try and manhandle it through the doors that way, though with change bags and shopping bags and a toddler I've not been tempted to try this, which is probably unreasonable...
Sod's law I've been caught out several times on my own in this supermarket. A few times there has been someone shopping in that aisle who looks friendly and not too harassed by shopping and I've asked them to watch DD - but according to a lot of posters, that counts as 'abandonment' (and I remember a previous thread where people were complaining about the pressure of watching other people's kids). If no one looks friendly, I have then used the disabled loo, as it seemed it might cause the least inconvenience to everyone involved.
What would other people do? Other than park the baby with the manager and say it's their responsibility because their toilets are so shoddily designed...