You have to hit the soda bottle really hard, but it is possible using only the Helmet and Bounce Suit (first two upgrades). The prize is just a bottle that fizzes a bit (you can place as many as you want, and all will disappear when you leave any scene).
There is no prize for beating all of Poptropica's islands.
Applebees12
For each island completed, you get the Island Medallion and 100 Poptropica Credits for the Poptropica Store. The Haunted House game awards 50 credits. There is no special prize for completing all the island quests. (see related question)
yes you get a medallion and 100 poptropica points
You win a prize.
the prise is a trailer
you get Nessie follower and bigfoot costume
You go to the kid with the helicopter and give the jumbo prize to him (he is next to the cranium shaker). He will give you the helicopter.
yes you will 50 credits
you just go to the beach and use your metal detector. you win another game if you find a token. then you can trade the jumbo prize with the prize you won
You halft to win every game on the wimpy boardwalk
The medallion and 100 poptropica store credits.