Observations on a Paris day as 'greatest show' looms

The sound of the sirens from the Gendarmerie vans reverberate around the Parisian streets.

Yet there is much good humour on the pathways, all in the rush to selfies or pictures of those standing in front of the Eifel Tower or the Arc de Troimphe. The hours are counting down to that flotilla of boats passing down the Seine, carrying close to 7,000 athletes - Paris's way of giving the opening ceremony greater expression.

The flight from Dublin to the French capital was delayed by nearly an hour. Not a surprise given the week that's in it and the amount of air traffic looking to find a spot on the Charles de Gaulle tarmac. Those wearing Irish rugby jerseys were scattered throughout the Aer Lingus flight, all supporting the men and women's sevens squads; the latter start their campaign on Sunday.

As for the men, it was a case of two visits to Stade de France. As we now know, James Topping's side lost against New Zealand and Fiji, ending their chances of a medal.

Still for one supporter, he also had the tennis at Roland Garros to look forward to. An example of those looking to make the most of this 'home' Olympics for the Irish.

For those working in the media at the Games, it all becomes official when one's accreditation is validated in a little corner of the departure lounge. In a matter of minutes that photo ID is thrust around one's neck. Out you go into the Parisian sunshine and others are wearing the exact same thing; brief glances are made as you try to figure out the accent. Lots of Australian and American media were out and about.

And then to navigate the Paris transport system. The Réseau Express Régional, abbreviated to RER, all told, relatively straightforward. It's five express train lines and on board various Olympic