How do I decline this offer without seeming critical?

[HenriettaPootel]

Taking DS to a local tourist attraction later in the week. Next door neighbour says she will lend me her membership card and I just have to pretend to be her to get in free (no photo ID). I don't want to do this on moral grounds (bit of a bugbear of mine - my MIL does this sort of thing all the time and I hate it). But how should I say no? If I tell her I'm not comfortable with it, then I'm implicitly questioning her morals/integrity over making the offer. If I say yes please then pretend I've used it when I haven't (or if I say 'I'd love to but I don't dare' or some such), then I'm pretending to condone something that I really don't. Any advice please?

[purplewithred]

Brief but polite - 'no thanks, we're fine'. Or sneak off without it when she's not looking.

[pickofthepops]

I would say another friend mentioned that the venue sometimes ask for a form of photo
ID as back up .. And that it would be too risky.

[horsebiscuit]

I've been in this position. I just said, thanks for the offer but I'm happy to pay the entrance fee. If it's a charity like a zoo or National Trust or summat then you can say you like to support their work.

[HenriettaPootel]

Ooh, you guys on Etiquette certainly answer quickly (I guess that's just polite ). Yes, I guess a quick 'it's fine' or 'I'm happy to pay' should hopefully cover it. And horsebiscuit thanks, I hadn't really thought of putting it in terms of 'they need the money'. It's not a charity as such, but it's still a historic property and, I would argue, a good cause.