I've have done the trip out to the ring twice from Scotland now - although the latest in the year I have gone was September (which was very nice).
I've always found all the people at the ring to be very friendly and chatty.
If you chat with people you will no doubt get offers of a ride around the ring and I guess its up to you whether you take that offer or not. Obviously you dont just want to go around there with just anyone.
Also I have seen others offer to take people around if they pay for the lap.
If you read all the information available and take care I am sure you will have no problem riding around the ring, but it is like wacky races.
Some laps are amazing in what you can see on the 'track'... we were passed by lots of GT3s but also got caught up in some traffic whereby the Ring Bus was going round, followed by a Hummer, followed by an old British couple crawling along in a Jaguar with the woman taking lots of pictures out the window.