yes, u wanna go kinabalu park/kundasand/ranau, u need a car
want hill trekking can try bukit botak(easy) or try bukit perahu(on the way to kundasang) = this one is quite hard

island is the only thing i haven't done in sabah as a sabahan, so no answer on that
for orang utan, sadly the place doable isn't in kk area, u need to go sandakan only can do it

Suggest you to go Kota Belud to learn diving. Very much less congested and you can learn properly. Can google BigFin divers. I did my advance with them.

you can't try diving 'casually' boss. there's discovery scuba diving but you still need to get a proper package from a dive operator.. island hopping people won't offer that one. only snorkelling.

nowadays they will come with letter thn ultimately red letter
after that don't know
just pay after u get the summon, it's the cheapest at that moment
i learn my lesson the hard way, end up have to pay RM300 instead of RM30

as long MPKK area, all will kena saman
if with line and no coupon, saman no coupon
if no line, saman illegal parking/obstruction of traffic

these are the one that i kena before

or other car got kena, just they left already....is it the same car?

tidak payah is fine
endah payah is local
but if u don't have local slang, just stay with tidak payah

You can  book directly with the homestays. they all have their own boats. I stayed at Sukau Backpackers B&B. If car rental have to rent in Sandakan. Sepilok is a very small area only.

usually will have 3 slots. 4pm cruise, 8pm  night cruise and 6 am morning cruise.

will last 1-2 hours each. For my night cruise I was the only passenger so i paid RM100 for it. Morning cruise around 60?