Ive had a few LHD's including a golf VR6 and a range rover.
As Erin says people are always jumping in the wrong side of the car but I never said much because I was always doing it too
Car park barriers etc aren't much of an issue in a golf if you're reasonably flexible, you can pull up close and reach over. Worst case scenario you have to get out and walk round but most of us probably don't use them much in the grand scheme of things unless you have one where you live or something.
As far as safety is concerned, visibility etc I never found a problem at all, I don't think it really matters, you're on the wrong side approximately 50% of the time whether you're LHD or RHD.
You might find yourself parking like a girl for the 1st few weeks though