I have visited Rocky's on a few occasions & would agree that it is not possible to see beyond the first 3 tables & thereby determine the quantity of their clientèle unless one enters the establishment! The 'back' & 'lower' section houses a number of computers that people come in to use all day long & a few others bring in their own laptops (free WiFi!!).
With regard to BRITISH food ....... we used to have that here in Puerto Plata. Derek ran the 'British Pub' in doce de Julio some years ago - it closed through lack of clients willing to eat there on a REGULAR basis. Prior to that there was Eddy's place on Avenida Colon which used to run an English Night (NOT successfull). Then there was the English 'Fish & Chips' place in Playa Dorada run by Martin & his wife ...... closed through lack of sponsorship!!
I am sure I have forgotten a couple of the others that tried 'English nosh' as a speciality & failed - maybe other longer term Brits/Canadians could remind me of them?
It would appear that maybe Liz & Biko ought to offer something JUST for the Costambar clientèle. Surely all the Brits now habiting Costambar would be able to keep them going with trade? Maybe Liz could start a 'Bangers & mash', 'Steak Pud with mushy peas' or 'Toad in the hole with mash & gravy' take away or delivery service???
Hey, they could also arrange a tank of water throwing constant 'RAIN' over anyone calling in to the café/restaurant



(water to be recycled back into the tank of course!

!). ~ Grahame.