Hi just submitted non O to Canberra as from Qld , how long before I receive Evisa approval, fly out 22/07/25 to Bangkok

Hey peeps, have an unusual question, maybe someone can help:

I applied for a Tourist Visa (60 days), but it got approved only hours after I had already entered Thailand.

So now I’m a the regular 30 day exemption stamp, and still have my unused letter of approval for the visa, which is valid 90 days to activate (as I understand it).

Does that mean, if I’d exit the country now (or any time within the next 90 days), I could re-enter on the already-approved Tourist Visa that I didn’t end up using?

Or will they check if I’m actually arriving on the dates/flights whose info was given when applying for the original visa?

Would be a shame to let it go to waste 🤷‍♂️

Thanks for any insights! 🙏