The best method in my opinion is to setup a RADIUS server. It will have a list of validated usernames and passwords that allow your customers
to use your WiFI service.
User Manager that is built-in is a simplified RADIUS server. You run it on only one of your gear and all others connect to it.
It must have a fixed public IP or use dynamic DNS (such as DYN.COM) to keep the public location accurate.
Read over:
http://wiki.mikrotik.com/wiki/User_Mana ... ng_started
You can pre-print, on paper, a voucher ticket to give to your customers.
If you are not able to hand them the voucher, you will need to create a website that can talk to your RADIUS server to present the
user the username and password or to enable the user by MAC address when they arrive.
I would recommend upgrading to the latest version on each device. (Version 6.36)
Also, Steven Discher wrote a good book for more understanding of Router OS:
https://www.amazon.com/RouterOS-Example ... nav-subnav