I apologize beforehand for saying this Ben, but these people are FIRST CLASS IDIOTS, they're concerned over THAT???
That's gotta be one of the least intrusive construction jobs I've seen in my life.
Well, I sure hope they put in a pool as well, not so they can have fun swimming, but so YOU can have fun with the PAYBACK.
Oh, and if they ask you for advice on pool buiders to choose, make sure you recommend the worst one out there!

This just sounds like they're thinking that they can make some money on this!
Don't people have better things to do with their time, what's this world coming to??????