my wife and i have booked 2 weeks in Kos, Kefalos, anthinoula hotel, september 29th, BB for five hundred pounds, with Going Places good deal i thought

this will be my first holiday abroad ever, i am a little nervous about flying but not overly.ive never even been inside an airport, so i really havnt got a clue what im supposed to do when we get there lololol.
we are both 40, but around 39 at heart :), so i hope we have booked the right place, we just want to relax, have a few drinks, with mabe a few nights of something more lively, (but not clubbing), day/boat trips out and perhaps if lucky get some fishing in. Have we made the right choice?
ive read alot on the forum before posting and kefalos sounds ideal, but what about the hotel, has anyone stayed there?, any reviews anywhere?
a rough guide of prices for food and drink(beer/water/pop) would be great
what time do the bars stay open till
do we need any jabs
i know nearly all this info is available on the site somewhere, but ive been reading all day and cant take any more in lolol, so any help you could give me would be great, put a holiday virgins mind to rest

thank you all
Gray