how is the cell phone service there for American carriers?
It's fine-all you have to do is pay, pay and pay some more.
All major Canadian Telcoms erect temp' cell towers as the Pemberton Music Festival venue is like another town of 40,000 plus people for 4 days. Check before leaving your data / roaming plan. Maybe better to stick to text & Wifi or just by prepaid Canadian SIM card :)
LOL! Sam speaks the truth.
Check with your carrier to find out what the roaming charges are. Some US carriers offer an add-on package for Canada for a month; that will be the least expensive way of using your mobile phone in Canada, other than not using the phone at all and only using free wifi when available.