What are the rules or etiquette for feed zones/stations? For example, do all the riders hold their position while everyone eats, or is permissible to attack?
Just as with taking a comfort break of the urinal variety, the same level of etiquette applies to a comfort break of the gastronomic kind. It is considered very bad form to attack in a feed zone, and you will normally hear about it further down the road if you’re brave enough to try. Once the peloton has collected their musette bags (cloth bags that contain water bottles and various items of food) in the feed zone, the race is back on; there’s no requirement to ask the whole peloton if they’ve finished their meal before attacking. In general, feeding is permitted at any time starting from the 50 km marker up to the distance marker indicating “end of feeding”, which is 20 km from the finish.