I wouldn't call it ridiculous, no. The fuel companies inevitably sell more fuel as everyone panics, even those that don't need it buy because they have no idea how long the protet will last. We can assume a day or two at most, with the anti-terrorism laws that halted it last time, I'm pretty sure it wouldn't last quite so long this time. So, essentially, the fuel companies have 'sold out of fuel' at all their stations in a day. Pretty impressive IMO. Considering all those people you mention should be taking part in the protest, why should they need to fill up early? They shouldn't be driving anywhere, that's the point. It brings the country to a standstill and therefore proves a point. 
 
Also, you seem to have taken my post totally wrong. I AGREE with fuel protests, I just disagree with EVERYONE filling up a day before and lining their pockets. Stage a proper fuel protest where no one buys fuel. Not a faux protest where everyone buys Wednesdays fuel on Tuesday. If everyone does that,no point is proven apart from the fuel pump attendent having to press his little button a lot less that day.
 
edit - Seems like myself and a fair few of the motors forum agree with the point I make about panic buying 
http://forums.overclockers.co.uk/showthread.php?t=17814199