there was a thread about this a few days back.
we had different opinions on it.
for me, i stay onsite and always have my bag checked coming from the hotel walkway to the park gate.
i always take water bottles in with me and snacks.
never had any issues.
same with snacks.
you can not take any glass bottles into the parks though.
no coolers allowed.
a poster added to my comment that they were given a paper stating just opposite.
this was issued to them when leaving the parking garage going to the parks.