A lovely example of how to pour sidra. Note the angle of the pour, and the angle at which the sidra is coming out. Then note the placement of the glass. Estimate how much is actually going to go into the glass, and how much will be on the floor.
However, as the booze was also free, I can't complain.
The floor of Sidrería Marcelino, in Uviéu. Traditionally, sidra houses spread woodchips and sawdust on the floor to soak up the spilled sidra from a) the manner of pouring it from above your head and b) the tradition of pouring the last drop in each glass (culín) on the floor.
This way, at the end of the night, all the bartenders have to do is sweep up the chips and lay down new ones for the next day.