Re: On the one hand...
Some years ago our company staged a corporate event for the new improved version of one of our web-based products, where new and existing customer's representatives were to be given a presentation and then a live demo of the new features.
The company chose an hotel with conference facilities as the venue, and the week before the event, we of the sysadmin team went and carried out a full dress rehearsal to make sure that everything was in place and worked.
The presenter's rostrum had power connections and a VGA connection to the built in ceiling mounted projector, but no ethernet connectivity. However, there was an adequate WiFi connection, from an AP that was located in the roof space of the entrance hall to the conference room, as we later found out.
Using a laptop, as was planned for the day, the testing all went smoothly, so we were happy to report to the chairman that there were no problems with the venue.
Come the day, the presentation (Powerpoint, what else!) in the morning went well, but at lunchtime I received a panic phone call saying there was no WiFi signal, so they couldn't do the live demo section of the presentation, and the venue had no IT support.
I drove to the venue, and on arrival, some quick testing showed that whilst the conference room was empty, the WiFi worked as advertised, but once the room was filled with 300 guests, the signal just got soaked up by all the big bags of water wandering around (the guests), and never made it from the back of the hall as far as the rostrum.
The nearest accessible ethernet connection was the 24way switch located under the desk in main reception, so I grabbed a 100M reel of Cat5 out of the back of my car, and it was threaded from the rostrum at the front of the conference hall, out of the doors at the back, and along through the corridors to reception. Two quick plug terminations later, and all was well.
The chairman gave me some grief about not testing properly, but short of hiring 300 extras, what could I have done?
I did have words with the venue manager though, and explained that one weedy access point in the roof was no bloody use.