One time in the backstretch was more than enough for me.
There were plenty of open seats on the frontstretch last race. If one entered from that side gates, they could easily get a good seat!
I haven’t sat there, but I would think you miss most of the action. Pitroad is what you want to see.
I think everyone needs to sit on the backstretch, front row, at least once. On the start and every following restart, the cars are still bunched and by the time they hit the backstretch, are running wide open.
That said, there will probably be many empty seats this year.