I have used Tix 4 Tonight many years ago and had a good experience from it. I was able to score Le Reve tickets for cheap last minute. I decided to try it again to get tickets to Love. They told me that the tickets are the "best in the house." I ended up with seats one row below the wall! Not at all what I expected. I paid ~$130 per ticket and I expected better seats. I think that's what the seats were going for at the box office (I didn't check).
They were also advertising discounts to restaurants and I got suckered into buying one for RM Restaurant at Mandalay Bay. I was told that it'd be "33% off." But, it turned out to be 33% off ENTREE ONLY below $41. That's a huge difference. So, pay attention to the details.
The staff was helpful in answering questions about restaurants/shows. But, I thought the whole "33% off" vs "33% off ENTREE" made them dishonest, and for that only 2 Stars. I may try them again in the future, but for show tickets only.