ive use them a few times too, and been ok.
mrs stayed in all day yesterday and didnt turn up and i wasnt happy so sent a polite email asking where are they, and they said they would try and get hold of agent,
i said well it will have to be after 3:30 (today) or have a refund,
so they issued a refund
wont be using them again now, plus SIB's link is much cheaper