"You didn't go to the wrong house, this is your home.
Your parents said, you told them you'd come back tonight or tomorrow morning, after the opening event was finished.
Your dad prepared a lot of good food for you, fearing that you'd go straight to bed upon returning, he originally planned to wait for you.
It seems they just about got over their jet lag yesterday, so if they had to wait until very late for you today, then yesterday's adjustment would have been for nothing.
Our whole family came to freeload a meal at your place today, so I couldn't just eat without helping out.
Just so happens, because our two families bought these new houses, there are still some places that need to be fixed and adjusted.
That's why I didn't manage to adjust my jet lag yesterday.
I only got up today close to dinner time.
Now's the time when I'm most energetic after waking up, so I volunteered to stay and wait for you.