Has anyone done any excusions with Serenity Vacations & Tours in St Licia? (serenitytvl.com) They come highly recommended on other forums like this one. I am still fishing around, but my group of 22 is booked with them, Zip Line, Golf, Land & Sea and would like as much feedback as possible from anyone who has used them. If you have done the volcano & beach tour or the other value pack tours, I would welcome your review as well. $45 is really cheap, but will we miss anything?