the answer is NO.
The name of Poptropica's 15th island is "Great Pumpkin Island". Sadly, we never get to see the Great Pumpkin. But the solution to the island quest is at the related question below.
Once you finish trick-or-treating, take the candy to the pumpkin patch and give it to Sally.
you grab the mask on the scarecrow and go into the house
There is no pigeon on great pumpkin island.
The pumpkin patch is to the right on Great Pumpkin Island. It was the only area shown in the island preview.
you find him eatin candy
Just avoid being hit till times is up
When you finish the 4 games (including the pumpkin drawing), Charlie Brown will announce that you are going trick-or-treating.
There are no buildings or upper rooms on Great Pumpkin Island.
The name of the island is Great Pumpkin Island. See the related question below.
you wait for the great pumpkin!
At the very end, there is a mysterious figure in the pumpkin patch!