Welcome to planDisney, Alexandra! We are so glad you are here!
I now can say I have an adult child too and while there are so many things I miss about them being little, it truly is fun to enjoy the parks with my kids as they are older too! If your kids will be entering the parks while you enjoy a slower morning, I've got two options that should work for you all.
The first option would be to pull up the e-tickets whether you have them in an email or have already connected them to the
Disneyland app. Then just simply take a screenshot and share that with them! That should work for them to scan into the parks without you. They can take that one step further and download the Disneyland app as well and create a Disney account if they don't already have one. Once they've done that they can add their ticket to their account with the number under the barcode. Don't worry, they can have their ticket linked to their account as well as yours without any issues.
I actually highly recommend your children have the Disneyland app downloaded for their park day anyway so that they can check attraction wait times as they are entering the park and even
mobile order a snack or two.
Alexandra, thanks again for stopping by! We are always here for your planning questions. See you real soon!
Carrie