McDonalds Angus Third Pound Burger...Maybe?

So, my mom has been in the hospital for, geez, the last three weeks. So I flew down to Nashville to be with her and my father. On the flight down I was hungry and had McDonalds. I tried some sort of new burger, which I think was probably the Angus Third Pounder. It was definitely a cut above their regular cheese burgers, and I have to admit the tomato was actually looking pretty good. I accidentally spilled my soda all over the airport waiting area's carpet, and didn't know quite what to do. If I were in a restaurant I'd attempt to clean it up while attracting the attention of a member of the waitstaff who would, more likely than not, send a busboy over to clean it up. While airports certainly have cleaning staff, I'm not sure who you contact to get to them. I feel like the airline people are too busy being rude directly to me, then bitching about other passengers to their colleagues right in front of me, to bother with maintenance.