If I were to travel and enjoy the vacation, I would still go since that's the purpose of going to Bali. Like, you can still enjoy and spend there using fiat. However, it would be a good way to promote Bitcoin if tourist spots like Bali are crypto-friendly because it can help attracting other people and get to know Bitcoin. Though regardless of the government prohibiting Bitcoin, if the establishments around Bali are not really into Bitcoin or doesn't know Bitcoin, it won't still affect Bitcoin adoption.
If you're on a vacation, why are you interested in promoting Bitcoin to people? It is not a full-time job. You should be relaxing and enjoying your vacation instead of doing something like that, especially in a country that has made it clear that Bitcoin and crypto are not welcome there.
What's the point of accepting or prohibiting it if the stores/shops doesn't even offer Bitcoin or crypto payment?
It's probably a deterrent to prevent any of those shops from accepting cryptocurrency or bitcoins.