During, before and after the launch you are all more than welcome to come and witness this. Hell, you can even go talk with the guy they have send in to ortbit and back. All technical information, footage and videos are also public.
We build the rocket, we build the launchpad, we collected the money.
But I guess, even the most hardcore Flat earther wont come on the launch day and follow all the footage and streaming from the spacecraft?