Must just be something Parent's like to do to their grown kids...
My Mom and dad are great and I love them more than anything, but a few years back they decided to drive down and surprise my kids while we were at Disney. They wanted to be part of one of their disney trips...etc. So I called to check in with them to let them know we had made the trip safe and we were all checked in, and I was imformed they were heading down the next morning. Needless to say they got their own room, but it really seemed to slow us down alot. But we made due.
When I told my mom and dad of our upcoming Fall trip my mom asked if she could hitch a ride down to my aunts house in GA. No problem. Well within the last week their plans have changed. Now, My mom and dad are both going and driving down themselves, picking up my aunt, then going to the beach for a few days then they are going to meet up with us at WDW. So not only did they invite themselves along (again) which I can live with, but they also invited my aunt along this time.
My thing is we already have our plans...were staying at SSR, were only going to be in the park 2 full days and 2 half days, we have our ADR's made for just us, and we already have our tickets to
MNSSHP. I feel like I am spposed to go back and include them in everything now. But I tried to nicely tell my mom that we already had everything planned and ressies made and that I wasn't sure I could change them this close to time. She said she understood that, but still makes me feel guilty!
So just like in poker...I will see your parent and raise you a aunt!
Maybe you can just tell them that you do not plan on leaving the WDW resort area at all, but if they wanted to meet up with you all for breakfast/lunch/dinner/ etc, in the food court of your hotel you can set aside an hour or so, but for the rest of the time you are booked solid!