this is a very interesting fact,
people waiting in line must be very curious about what is really in the casino, I can't imagine the euphoria that happened in the world's first casino.
Even though it was the very first casino, which may have contributed towards the enthusiasm and excitement of the whole situation, I doubt that the people did not understand the risks of gambling as gambling itself was definitely not a new concept. People just just gambled in private.
The crowd was probably just thrilled at the idea of official gambling and something new. Gambling may have not quite been legal yet, at that point.
I imagine its like when weed got legalized.
Gambling does exist in different forms before it actually becomes a business. People used to play gambling at individual levels however as the technology evolved, gambling become a proper business and thus it was promoted to the public as a means to get quick income without much effort however the reality is otherwise.
When internet was invented, online gambling was also introduced and now everyone can access gambling platforms on their laptops and phones.
Once a time gambling was centered around a large social event. Gambling house were made temporarily in places where there was a lot of crowd. But later on it became very popular with the people and occasionally gambling was organized. At that moment it starts to expand massively and settles well. Then it is also get legalized. And whenever gambling is conducted over the internet, it creates a world wide frenzy. Nowadays, people are gambling comfortably from their home.