Going to time WSOP for the 1st time? It will be exciting, but also a little bit intimidating. Here is some advice to help you do your best. Hopefully you can learn from some of the mistakes I made early in my career:
Get a good night's sleep. 10 rounds of play is much more mentally exhausting than you can imagine.
Eat a good breakfast. It is a long time until the dinner break.
Eat a light dinner. It will help you stay mentally alert during those last, late night rounds.
Walk around and get your blood flowing during the breaks. Use the time to mentally recharge, review your play, and develop strategy for the next two hours.
Be aware of how the tables are breaking. You can't set up any long game strategies against your opponents if your table will broken up soon.
Consider playing a "warm up" tournament. I know Druff hates Sheldon Adelson, but the Deepstack events at the Venetian give you lots of chips and are a great value. They are much better than the daily tourneys at the Rio.
Play in the highest buy in event that you can afford. The higher the buy in, the more starting chips, thus more time make plays before you are short stacked. The $1500 events don't give you as much play as you think.
Be friendly and courteous at the table, but never give away free information. You will encounter many "friendly" opponents who will try to engage you in in conversation (Daniel Negreanu comes to mind, but Amarillo Slim elevated it to an art form). Do not fall for this ploy! The less your opponents know about you the better.
Don't be afraid of being "bubble boy" (except possibly for the main event). Your goal should be to get to the final table, not just cash. If you go into a shell when you are close to the money, your opponents will notice and take advantage of you timid play.
Most importantly, never, ever, give up. I can't tell you how many people donk off their short stacks at the end of the night because they would rather "start over" in another event the following day. In most cases, you are only a couple of hands away from getting right back into the tournament, particularly in no limit.
Good luck. See you at the final table.