Bookworm,
The answer to your question "What do you do with the IR????" (or IMCR, for that matter): you plan an alternate that
does have an instrument approach, and you check that the TAF predicts weather that's comfortably within your capability.
Simples!
However, it can't be that simple or you wouldn't have asked the question. As with Fuji, I've also probably missed some subtlety in your question!
