Isn't pre-marital counseling the same as meeting with a clergy member to discuss about our marriage?

It may or may not be. Some religions require pre-marital counseling before you can get married in their church. Some do not. This is much more in-depth discussions about your views on marriage, religion and children, etc.

But in any case, you would want to meet with the clergy member to discuss the details of your actual service - requirements, schedules, rehearsals, etc. which is separate from counseling.