The number currently being spread around don't have any legitimate backing however like around 2PM there's was less than 50 ticket left and they were most likely all bought at the doors. Lots of people actually do that.
Also considering tickets are slightly more expensive than DWT and she most likely did do around ~15k than $1M is very likely.
When the suspended screen isn't titled behind her, they use the sheets on the seats behind her to project lighting schemes. It's probably not visible from floor seats like a traditional LED screen would be, but it's visible from higher up seats.
Rihanna's doing her first big city on Tuesday, she's going to be in Miami so we'll probably get "big critics" review. There's was one in Jacksonville and he praised her but it was a local newspaper.
Also the Miami show is almost soldout, and I wouldn't be surprised if Gabrielle Union and Dwayne Wade attend the show.
but I don't remember which song was
