Always happy to have a begiiner on board. Gives the rest of us a chance to show off!   

But seriously, folks, I'd be happy to show you the ropes (literally and metaphorically). We do have to pay the charter cost of the boat but the extra expenses needn't come to very much. I reckon we should get away with less than £150 each for the 5 days with any luck, depending on how frugally we eat!

Do come back to me on this.

Steve