Marlin surrounded by leaves

I had intended going to the Calumet Open Day today.   One of the attractions is that you get a free sensor clean.    Last time I got it cleaned free and there was an option to make a donation to charity which was a great idea. 
However on looking closer I noticed that today they were only offering the sensor clean to the first 50 Customers so I knew I would have to get there really early. 
However luckily I just noticed on the site at the last minute that there is no cleaning on the day - its a case of a voucher going to the first 50 people who make a purchase on the day!  As I didn't have much time I decided not to bother.   Its only a month since Calumet merged with Wex.