The early morning coffee excursion for conference goers is a unique phenomenon to watch. You have those that either make the coffee in their hotel room, those that stop in the hotel lobby for a free cup or for a starbucks, those that hope the conference supplies it and those that will leave the hotel for a little coffee joint around the corner. But, I am willing to bet, that almost all conference goers get some sort of morning beverage (coffee, tea, diet coke, OJ, whatever). Only a very small portion will leave the hotel if the hotel is directly connected. Which would you rather see them do? Personally, I would love to see even 20% of conference goers visit a local establishment for their morning bevie.
The idea is that the pedestrian bridge is a deterrent to people leaving the conference center, maybe not as much in the evening, but at many other times of the day. There is absolutely no need for a skybridge. If the County decides to expand the convention center to that block in the future, then why build a skybridge in the interim? It makes no sense what so ever.
The bottom line is that a conference hotel should benefit the entire community at the highest level possible. A skybridge diminishes the benefit to local businesses.