When my daughter was 11 we did a limo party. She did not have boys at that party though.
We had a limo pick everyone up at their home, drive around town, some back to our house for pizza, cake, crafts, movies, sleepover.
At 12 we did the same thing except with a smaller group of girls and the limo took them to the Marriott at the Shops of Legacy. I had a suite rented, the girls had 1 room, I had the living area. We walked around Shops of Legacy, had dinner at Nicola's, came back to hotel, did some swimming, back to room and movies with a late night snack from room service. The next morning I had juice, milk, donuts for breakfast before they left by 10.
Enjoy! They grow up TOO fast. My daughter turns 15 this year!