I've seen "O" twice. The first time was from actual front row seats in section 104 on the center aisle. The second time was from the first row of section 203, which are considered "limited view".
What makes them "limited view" is a handrail on top of the low ledge in front of you. Unless your child or Billy Barty. it's really not going to be in the way.
Overall, I thought the front row of Section 203 were better seats than the actual front row 104 seats.
It's the only show I've seen in Vegas that I wasn't comp'd for. And I paid to see it twice.
You can choose your exact seats when ordering tickets. Pay, go and enjoy. You won't be disappointed.