What is the resource consumption of a network drive

I have a Linux NAS with Samba shares. It is in our LAN and will be accessed by 25-30 machines (most of them ruing Windows). There are 10-15 different shared folders with different rights for the different users.

In order to simplify for the users, I want to map network drive for everybody, each user will then have up to 15 network drives.

A previous network admin told me that he does not want to do that for resource conce, at that time, I did not question but now I do.

So, was my network admin right or can I go ahead and map drives?

Question of the resource is valid for both the server and client of course.