Personal experience
I used a player's card at a few such casinos playing a similar spread to you for 4-8 hrs at a time, and heat was occasional. I did get a backoff at South Point after accumulating a lifetime of 30 minutes of play there spreading 5-30. You might last even less at El Cortez. At your stakes you probably won't get much, a free buffet here and there, and if you're lucky, a couple free weekday rooms. If you plan on increasing your stakes on table games in the future, it is probably a good idea to remain anonymous.