Depending on which drinks , snacks , etc. you can have , it could be preferable to most AA lounges. A few years ago when DL started servive from SCL that is what they did . It was unlimited service of all menu items at at a nice bar / food outlet airside in the airport. Spent 2 hours in there . Had my meal there and got on the plane and went to sleep. I don't think AA will do this in the UK . A person could run up a $150 tab at Weatherspoons fairly easily . I have done it several times in the past . Probably will be a chit for a set amout. Remember we are talking about an airline that thinks $15 is good enough for a meal at an airport hotel restrurant !!