Wish the dial 9 strategy was more consistent. In Dallas recently (can't remember if it was the Intercontinental or Harvey Suites - stayed at both within a week of each other) I had to dial 9 for an area code 972 call, but 8 for a 214 or 800/888 call. All technically were local calls.
I don't think hotels can keep up with the continuous area code splits and overlays (and the mandatory ten or eleven digit dialing). It's havoc on my default modem settings.