Paula, with MediaCON's service sometimes going out, you might also want to leave simple instructions of how to reset it if someone's computer doesn't automatically get a connection. MediaCon recommends unplugging the power supply to the modem (this is the larger box which will feed into the wireless router) for 60 seconds, then plugging it back in. From then, it may take up to about 20 seconds for the computer to find the connection. If that doesn't work, they will want to try reseting the wireless router by the same method -- unplugging the power supply to the wireless router (Linksys says 30 seconds, but to keep instructions simple you might say 60 seconds) then plugging it back in. Typically, it will be MediaCON's modem which needs to be reset.
It might be easiest to label MediaCON's modem so that the user can easily identify what you are talking about. Maybe even a color coded sticker, referencing it in your troubleshooting instructions. I'd forget about leaving MediaCON's technical support phone number, b/c they always ask for your account number and last four digits of your SS#.
One other note is that you can set up the wireless router with an encrypted password (WPA) to block other people from using it, leaving the password in your instruction guide to rentors. Once they enter the password, and re-enter for accuracy, they will not have to log on again, as their computer will identify the protected wireless connection. If you chose to leave off the password access, anyone with close proximity will be able to access the internet from your connection. I'd guess that everyone in the other houses around the pool would be able to connect via your wireless router, without paying for cable internet. Not trying to scare you with the following but you should be aware that everyone who connects to the internet through your connection, will be using an identifier which will go back to your wireless router (ISP number). I'm sure it is rare, but if someone were to be dealing,... let's say child porn (connecting via your wireless router, even from another house in the neighborhood), and the gov't picks up on it, the Gov't will trace it back to your wireless router via the ISP address.
I've heard of a case where a lady was arrested for trafficking child porn, and spent some time in jail before her friends and attorney could show that she had an unsecured wireless router, which allowed anyone in close proximity to her house to connect, and that she had no trace of the porn in the hidden files of her own computer. The case was overturned and she was released. As I said, that stuff is probably rare, and even less so down here in la-la land, but you should be aware of the possibilities.
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