Vava'u car/scooter rental and boat/kayak rental

Hi,

We've decided that come June when we head off to Tonga we will go to Vava'u and probably stay at Lucky's (looks really nice - have a look at google maps). Anyway being so far way from the main town I thought it would be good to hire a car or scooter or maybe even a boat?

Can anyone give me an idea of how much it cost to hire a car or scooter and whether there is any cheap boat hire around?

Thanks again,

Simon and Belinda.