Caesars is very opaque about points activity. I'm assuming "bonus" referred to the daily tier credit bonus thresholds. Doing the math, it appears that hotel and F&B spend used to generate daily tier credit threshold bonuses but you'd only find them by doing careful math and noticing odd 125/500 whatever TC jumps in your balance about a week after the fact.

Overall, it's extremely difficult to audit points activity in your TR account. Random bonuses get posted at random times with no detail available.

But, at least in the past, hotel spend would trigger daily tier credit bonuses.

Under the new earn rate of 5X tier points for hotel spend, I wouldn't even consider this a bonus. It's just that the TC earn rate on hotel spend has jumped from 1TC/$ to 5TC/$. Not a bonus per se. Just increased base earn rate. Don't call it a bonus as that is confusing.