I love that Costco allows such a long trial period. Other providers should consider this too. 30 days just isn't long enough to test hearing instruments, and that has been especially true during the pandemic.

Reality though, is that background noise is a 'monster' for people with hearing loss; aided or unaided. We will still have trouble understanding speech in very noisy settings.

While it's not possible to resolve completely, I have helped myself by using add on technology. I've been using a hand held microphone for decades. The first that I used required 'direct audio input' in the hearing aids. I literally plugged in a tiny hand held mike, with a cord, to the hearing aid. That technology has evolved to wireless microphones that are available with some hearing aids. I don't know if the Kirkland model you have, has that feature. Other models that Costco sells do have it.

The mike I use now is a BlueTooth device. It's wireless and works quite well, especially in situations like you described...a couple of adult voices near you in an environment with a bunch of kids having fun.

The downside of the mike for some people is stigma related. It shows. I learned that didn't matter years ago with the corded variety when someone at a cocktail party asked what I was using, followed by the statement "That's really cool! I didn't know you were smart." I realized then, that my non participation in group conversation was a huge negative for me. It motivated me to educate others on what assistive tech can do.

Just sharing this because it has been a true game changer for me; one that took place a few decades ago.

Keep us posted on how those hearing aids work for you, and also on how the provider offers help and suggestions. Good luck!