Am I over tipping?

Afternoon gents. Long time follower, newer to the hobby. I am curious if other fellows are tipping the same for L1 as L3. Thanks in advance, just trying not to mess the market.

The rule of thumb is: You tip the employees of the business; you don't tip the owner of the business.
As per the hobby: AMP girls are employees of the business (and should be tipped); indie providers are owners of the business (and don't require a tip).

Do you think the amp girls only work off tips or do they receive any of the door fee