The venue is small so most seating would be considered "good" seats. The most expensive tickets are right up next to the stage and the performers regularly interact with the audience so those with better tickets are more likely to get to participate.
This show is definitely 18+ and it explores human sexuality in all it's forms. This is not good for any super conservative folks out there. The show itself is really breathtaking and the stunts definitely live up to the Circ de Soleil reputation. I definitely recommend!