fragg i used to live there, an yep the ferrys and everything else goes sky high on price TT week, its a brill atmosphere though, even the cost of food goes up, loads of eclectic peeps about they have sand dune racing over in peel not sure if its on TT week or just after though, thats a good couple of hours entertainment as well
just dont go tryin do nought in douglas cos the cops down that way are right tough on those that try !!!
hope you have a great time