A Brit in the US

For a long time I wanted to visit Edisto Gardens and had been waiting for an excuse. I just woke one morning with no particular plan in mind and decided to find Edisto Gardens - even though there would be precious little in bloom at this time of year. I jumped into my SUV alone this time and roared off following my GPS to a vague address that I had pulled off the internet for the gardens. Anybody that knows me and my GPS will realize that when I say vague, I'm lucky to end up on the correct side of the state let alone the right address. I have an elderly TomTom unit that takes forever to lock onto satallites - I'm talking about ten minutes at times. Then it gets me to the general area before becoming somewhat of a muddle on the specifics, frequently misplacing my location by a few streets. It's pretty awful for accuracy but I own it, I paid for it and I've been using it for several years. I shall continue to use it until it ceases to function despite the inaccurate maps