The possibility that the casinos have no actual intention of opening in June (or whenever given the governmental green light) and are merely testing the waters by accepting reservations is probably greater than the chance that Rob was just messing with everyone by deliberately posting pictures of an RV he doesn't own - but both of these are conspiracy theories and it's far more likely that the way things appear - that the casinos want to open, and that Rob was hoping to dupe people and got caught - is the way they really are.
As far as getting busted for violating quarantines, that is happening daily in places like Hawaii
https://abc7.com/hawaii-quarantine-s...virus/6192017/
https://www.9news.com/article/news/h...5-c0461e08d396
https://www.theguardian.com/world/20...avirus-covid19
https://www.cnn.com/travel/article/h...ine/index.html
https://www.staradvertiser.com/2020/...ne-violations/
and actually deterred us from spending the past month there, even in our own place.