Time is money and all time is relative. Not my cleche's but former belongs to a sucessfull capatlist and the later is from Mr. Einstein.
There may be cities or regions in the US and around the world where the answer would be the same by most local hobiest and providers but Dallas is
not one of them.
The few ladies that I know well enough to ask for "an early appointment" each would have different answers based on their lifestyle and managment of their own business vs. their non-business commitment.
I think the answer to your question will come best in a reply to a text or PM to the lady in question.