Can I see everything if I go observation deck

You can do both ways but i advise to book in advance bcz u might be able to get some discount online.

Yes. No issues for us and we were in shorts and thongs

No. You can only access the swimming pool if you stay in the hotel.

pool is only for hotel guests

You buy tickets for the deck at ground floor level, staff should be able to tell you about admissionto the bar etc - wedidn’tnotice any thing about accessing the bar etc till we got to the deck and were toldouradmission wasdeck only- nothing else.We weredisappointed and we were not prepared to go all the way down and pay for another admission plus access to restaurant/ bar etc. Cruise on the river from Clarke Quay and/ orBoat Quay - easy to find , lots of boats, great in the day and lovely at night too. Don’t know about Skypark , sorry but dining outdoors on the Quays at night you are probably going to see some lovely light shows. Ps Jurong Bird Park is amazing!

Buy your tickets on the day,you then can decide when you want to go,weather wise.