Welcome to MB.
If you have not already done so, your about to enter the wonderful years of “How am I going to keep my teen kid happy in the World and not strangle them in the process”.
We found by giving them some freedom they were ok with gracing us with their presence. After all, why pay for food when mom and dad will pick up the bill.:laugh:
Also, letting them go off on their own worked well. At first it was in the same park were in. As they got older (at least one had to be 15) they could sleep in late as we left for the parks and meet up with us later. Or they could leave the park and go back to the hotel midday on their own. As to things to do, would they like a night at Disney Quest. You could drop them off with instructions they had to stay there, have a quiet adult dinner alone, and meet up with them later.
Play it by ear. Your age difference is not a 6 year spread like ours was. Funny thing was that even to this day our youngest DD never wants to leave our side since she is worried she would miss something. And it was the same way this past fall, even with her now being 23.