Does anyone here on the UA board use a Priority Pass membership to access the RCC?

It's listing unlimited access for a single person for $399 per year. It's good at not only RCC locations as well.

Any experiences with some RCC matrons rejecting Priority Pass?

Sounds like a better deal than joining the RCC itself. Especially if you travel alone frequently ($24 for a guest each visit). But, no MP miles (unlike joining the RCC).