Yeh, Maxalt, you are spot on. If you miss your flight then you have to pick up the tab. Done it twice due to that extra quick beer. Thing is I know the rules and take the consequences. The last time I did it it cost me £80 overnight in a hotel near STN and £40 flight back to PIK. Expensive last beer. Strange thing was it was still way cheaper than flying BA or BMI into LHR even including that last expensive beer.
As regards the DUB trip, chances are that the flight will not be delayed given my experience. As its a rugby trip you will leave a bit extra time at STN to chill out have a few beers so as not to miss the connection. If you do then thats all part of the adventure. Take it easy big man.