I am a Jazz fan, come in peace and, as happened last year, I am rooting for Lebron and Miami to win it all.

Next October Miami is coming to Brazil to play a preseason game against The Cleveland Cavaliers. The game will be played in a city far away from where I live. I will have to book a flight and hotel and try to buy the tickets, meaning it will be expensive.
I was wondering if you guys could tell me how does it fell to watch a Miami`s preseason game. I know it is not like watching a playoff game, but do they play with intensity? Is it like watching an All Star Game-like, where they are just having fun?
Watching The Heat would surpass those things by a mile, but I just wanted to know in advance what kind of game I am going to get.
Thank you very much.
Best Regards.
Go Heat!!