Does anyone use an 'I can't wait' card

[icequeen34]

I have an anxiety disorder which manifests itself in lots of horrible symptoms but one of the worst is urgently needing the toilet. This has caused be a lot of problems going out especially during covid when access to lots of public toilets have been limited. It's really beginning to take over my life.
I'm considering ordering an 'I can't wait' card but I don't fully understand them. Do you need to have a physical problem to have one? And what extra access do they give you? Is it just that shop owners and people like that are more likely to let you use a private loo if you have a card to show you have a medical issue? Has anyone shown a card and still been refused access? Basically is it worth having one?

@Mammylamb

I don’t have the card, but do have a radar key because of IBS. I look well, so get some funny looks when I use a disabled loo (I only use it when desperate, otherwise I use the normal toilets.). There may be some who say that I don’t have a real disability: but before having the radar key, I have unfortunately shit myself in Public when I couldn’t find an open toilet hence why I have the key.

At the shopping center near me you need to pay 20p to use the toilet, and I didn’t have that on me and was absolutely desperate. I got my radar key out while waiting for the disabled loo to become available and the toilet attendant let me straight through to the normal toilets without having to pay

I'm glad they let you through and behaved with compassion. I'd consider your condition a disability anyway.