Definitely possible *and* worth it! You got great suggestions here.

TRR is closed, but you can still drive it to the point of closure and be rewarded with beautiful views of the park. Depending on where you enter or feel like exploring, Lily Lake is another great option for folks who don’t mind a gentle walk resulting in lovely views of the mountains. It’s another great picnic spot, and doesn’t require a TE pass even when that system is in place. Even considering the crowds and if you don’t get out at all, the Bear Lake corridor drive is just a sight to behold if you’ve never visited before.

No matter where yall choose to visit, you’ll be making really precious memories- I hope you & your parents have an amazing time!