Any so so-called locksmith in my area will destroy the safe lock getting it open
That's surprising. You contacted every locksmith within 100 miles of you, and every one of them said they'd have to destroy the safe to open it? Not a single one said they could code cut or impression a key?
Is that why you stated every one of them is a "so-called locksmith?" Or did every locksmith you spoke with confess that they were a "so-called locksmith," and say that they didn't know how to make a key because they were only "so called?"
Oooookkkkaaayyyy, wait, I get it now, my bad. The name of the locksmith company you spoke with is So-Called Locksmiths. In that case, I'd recommend you call a different locksmith. If nobody who works at So-Called Locksmiths knows how to make a key, I wouldn't do business with them either. I'm sure if you called Real Locksmith Inc., they could help you out. I think their phone number is 1-800-DONTBASHLOCKSMITHS
Just something to think about. You came to a website with a decent population of locksmiths, and a large population of people who aren't full-time locksmiths, but enjoy one or more aspects of locksmithing (e.g. picking, impressioning, collecting). And basically put down locksmiths. Not a good first impression, and not a good way to ask for help.
On to my other concern ....
I couldn't help it notice you used quotation marks around "my safe." That stood out as a bit odd to me. So I just checked the First Alert website, and it still tells you what you need to do to get a replacement key. I went to the Honeywell site, and it tells you how to get a replacement key too. But you said they don't provide replacement keys. Interesting, my dear Watson.
Perhaps it's my non-trusting personality, but something doesn't add up. What I get from your post is that you want to get into a safe without calling a locksmith out, or without bringing the safe to a locksmith. You say the reason is because not a single locksmith near you can open it without damaging it (which would make it obvious somebody got into it). This isn't a true statement. You want to get into a safe without getting a key from the manufacturer because you say you can't get a key from the manufacturer (to do so requires proof of ownership). It appears you can get a key from them. It makes me wonder why you need/want to get into a safe without anybody knowing, and why proof of ownership could be an issue.
As Gordon said, we can't help you open the safe.