Book direct. Stay independent.

Coastline, mountains, and national parks (Snowdonia and the Brecon Beacons among them), with independent stays scattered right through both. Wales has more castles per square mile than any other country in Europe, a direct legacy of centuries as contested territory, and it's genuinely hard to drive far without passing one. The coastline, especially Pembrokeshire, holds up against anywhere in Britain for proper cliff-and-beach walking.
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What's on, attractions and getting around Wales, from the official tourist boards.
The emergency number across the whole of the UK, including every region here, is 999.
NHS healthcare is available region-wide. For anything non-urgent, most areas also have NHS 111 for advice over the phone.
Queueing is taken seriously nationwide, and a service charge or a rounded-up bill (roughly 10-12.5%) is the norm at sit-down restaurants, though never compulsory.