need some help please

Yes, and welcome. You will like it here. The girls are friendly, and parties are fun. The seasons are reversed here; what is winter to you is summer to us and vice versa.
The drinking age in Australia is 18. It used to be 18 here until some pissant do-gooders got hold and upped it to 21.
Another change you may notice is that many if not most American are armed. I know the government of Australia commanded that all personal firearms be turned in, and the population went along with it for some reason. That will never happen here; only a few states or municipalities prohibit the carrying of concealed weapons. Liberal politicians here want to disarm Americans so it's a big political issue. North Florida is a lot different than south Florida is terms of firearms. Don't be shocked.
People here are friendly and welcoming, just like Australia. Look forward to a good time.