our first run in with them was '99 when i did paris with my now thankfully ex.
We turned up on the champs at about 8am, the road was still open and that year there were large stretches with double layers of barriers. There was a nice big section with only single barriers which had yellow tape stretched around and between two bus stops. We checked with a policeman and he just shrugged and said we could stand there so we did.
two minutes later two screaming banshee american women came running from table outside a cafe screaming at us that we couldnt stand there. Apparently they had been there since 7am, had taped it all off for them and their freinds and then sat at the cafe drinking coffee.
They then proceeded to stress to us all that they were in Lances fanclub and we had to leave their cordoned off area. We ended up opposite them which was pretty unbearable. all dressed from head to toe in stars and stripes, shouting constantly, didnt shut up with their damn horns for about 9 hours.
The punchline was, on the lap of honour, lance just rode past them and didnt even stop.
I didnt realise the taped off thing was such a popular american custom. Us brits usually make do with handbags and jumpers to mark our spot. In fact,
the easiest way to denote your space is to put your pint there.
Must say, we have met four or five absolutely lovely americans on our travels, who we have spent the whole day with and had a great time.