I’ve gone several months with an expired sticker with no issues, but I work from home so my time on the road was mostly nights and weekends…expired reg is a bigger deal I would believe if pulled over.

2nd things listed here. Also Potts Point Preserve, you gotta park at the landing and then walk 10 mins down the street to the beach area. I’ve only been there in summer though, not sure how it is during winter. Other things listed are easier to access.