I lived there for a few years and ate rabanut mehadrin on milchigs only, as you can’t quite go wrong with it if it’s chalav yisroel...on meat I’ve heard far to many stories to trust them.def not ou level of no nonsense. Bet Yosef doesn’t have a very good reputation from what I heard..all the others are fine(badatz shearis Rubin machpud etc.)Non mehadrin is not worth the paper it’s written on, it’s not always glatt.
All the others I ate, מחפוד instructs his mashgichim to tell ashkanizim if it’s אחוריים but ime they don’t always remember, you could always ask the waiter.
Shemita, terumos, maaser, infestation.. the problems on basic milchig/veggies is way more complicated in Israel than elsewhere, which is why it’s recommended to ONLY eat from a good hechsher under all circumstances. Shemita problems can oftentimes be worse than shechita/Glatt problems.
The Charon Ish had some very harsh words for people who came from chutz la’aretz and were nichshol in mitzvos hateluim ba’aretz. I believe the exact phrase he used was a quote used by the meraglim.