I know what you mean about west wales. Was flying near there a short while back and keeping clear because of a RATS 7nm warning on the AIS daily update ansafone. Was there anyone on the radio there when I passed - nope! Makes you feel the same way as those roadworks where there are millions of cones but nobody working. Anyhow, Haverfordwest is open (unlicensed at w/e) with the Propellers Cafe. The 'XL' All day Breakfast is aptly named and highly recommended. I didn't need Avgas there, but it was offered on landing. Swansea also does a decent lunch, but you do have to be careful that people don't suddenly drop into the cockpit beside you.