Sounds like something a pedo would suggest

I did with my hubby. We went to the pool with the kids for our first date. We had also know each other for about 5 years at that point so I already knew neither me or the kids would be in danger. I dont think I would if I didn't know him. I want to say that he might just be excited to get to actually meet you and that in his mind the kids can play while you guys talk, but like others have said this could be a very bad thing as well. You don't actually know this guy and you can't really know 100% that he has good intentions.

No!!!

Don’t forget to wear a wedding dress

Absolutely no. Do we not see enough crazy shit on the news for you to think this is not a good idea?
Christ, what if he is a pedo?!

Maybe in his mind the date is with your kids and you’re the one tagging along. I’d get to know him first before you take the kids anywhere near him. Look, he could be a really nice guy with no creepy intentions at all, but I’d rather play it safe than have a stranger hurt my kids.

Absolutely not. You have no idea who this man is, do not allow your children around him yet.

That probably means some of your kids aren’t even in school yet so I’d say hold off a bit longer

No never appropriate to have a first date with your kids.

No

No, I don’t think this is a good idea. Surely you can get someone to watch your children an hour to meet him for a coffee? Family/a friend/a babysitter/ a trusted neighbor/ occasional care? Surely you can find someone? What do you usually do when you need to go somewhere on your own?

No way

Not for the first date. Find a babysitter or if it’s that hard to get one then go to a club which has a kids club and have a cup of coffee there with him while the children are being watched in a seperate space.

He suggested going to a park. I think that's a lovely idea

Not the first time fuck that. You have never met this guy before.
Try to see if you have a friend,family,babysitter who can watch the kids.
Maybe the second time if he has kids the same age roughly you can meet at the park.

Maybe if he has kids of a similar age and it’s a getting to know you play date. Otherwise, no