Here's a link to last year's STS list, it's been the same for the last few years so I doubt it will change. Basically only the top section is relevant.:
https://www.wsop.com/2017/2017%20WSO...%20Details.pdf
There's a section of 20-40 tables dedicated to these, they run all the time, some people swear by them and play little else during the series. You can buy as many tickets as you want at one time, and then just sit down at a new table with the appropriate ticket anytime during the summer. You get paid out in lammers in increments of $500 with a little cash on the side (used to tip the dealers). Chops happen frequently. The 175 and 125 levels are very popular followed by 275. 525s go surprisingly often, and 1030s even do well, especially the day before marquee events.
Majority of people/tables also get last longers going to increase the prize pool rake free, so expect that topic to come up as people are sitting down.
The other games are hard to get going. If you dont want to play NLHE at these levels you'll wait a while. Really the only time odd games get going (even plo) are the day before their respective bracelet events.