... replying late to this, but here goes....
With casinos, check the signs on entry - it's likely to be signposted if you can't film there. If they don't mind, don't expect a a sign encouraging filming or photos. Generally, however, the answer here to expect is a no.
Casinos themselves have very high levels of security and surveillance, but it's discrete. Even mobile phones near the gaming tables may not be permitted (Star City), let alone something resembling an out and out filming device!
At the beach or pool, it may not be blanket "illegal", but watch for sensitivity here. The Child Protection Act is a cause for concern. You may not be investigating a child, but Police are sometimes called and you may find yourself doing some explaining or even scrolling through your images to show them exactly what you have been photographing.
By that stage, however, your 'cover' has clearly been blown.
At the airport (again, high levels of in-house security) discretion is needed. A security guard once asked me to leave an Australian airport, stating, "unless you're travelling, you have no lawful reason to be in the airport". The comment was a load of pseudo legal phooey, but knowing that I'd likely have to come back to that airport many times in the future, I politely and quickly left in a co-operative, manner, before the incident made myself marked or memorable to airport security as a whole.