Lol thats what I've been doing too! Bought a Nokia N95 and now im looking for wireless networks everywhere I go. You'd be suprised how many and where you will find them.
Even just driving past places in the car!
I've got one myself, and must admit to attempting to find the odd network to get a bit more speed and save on data charges :P
Back onto the towers wifi. I'm very surprised that they haven't installed a decent wifi network in the hotels, even just around the conference suite area. If they're going to appeal to corporate hospitality more, they really need to consider these sorts of features as it's often something that companies look for when planning events now.