Our wifi is free , when they look it up it says
motel guests NO PASSWORD REQUIRED it could not be any easier and yet we still have people come into the office and ask for the password . I just thought some people where stupid but i am coming to believe that most people are stupid or just plain lazy or both . They don`t even look in the book that has big bold letters saying
GUEST INFORMATION which has the instructions for the wifi.
Nowadays if they come and ask me to help them connect there device cos they don`t know how to use it , i refer them to an american number that made the antennas we use for assistance or use there device makers support line.
Speaking of wifi, just for others information, we use a diy system from freenetantennas.com.au
called unifi and it is a superb system , it just works all the time.
I installed it myself and you can choose to have passwords , no passwords , pay to use etc.
You can monitor guests usage and block them if they hog bandwith etc. It is a very user friendly.

We did a 17 room motel for $400.00 and haven`t had a problem with it
In fact i haven`t even looked at the monitoring software for probably 2 years , it just works.