They have betting. Plenty of booths to go up to and place your bet.
I was there last February with a couple of guys from the UK and we were staying in Downtown. They were doing a race and wine tasting ticket. I kid you not. Was a really nice day out although my two colleagues lost a bit on the betting but I came away a few bucks up. There is a long straight at the finish and they have plenty of seats. Near the race finish there is a VIP area which our ticket covered so nice for sitting to see the finish and easy to get bets placed. We went by Uber and it was not too bad but on the way out (they have an Uber queue) an AMerican said about the code. Apparently they were sponsoring the Uber ride with 50% off. Well worth check if you are thinking about getting an Uber.
Here is a link showing the seating.
http://www.santaanita.com/discover/seating-admission/
The web site gives lots of information on what is going, eating etc.
With the wine tasting and racing it made for a good day out and I am not a racing fan.