His own grandaughter, and he won't provide a tent for her party? What an a-hole! Rent from the store. It has insurance in case the tent malfunctions.
He tries to extract as much money as he can from those around him. He's an extractor, when it comes to financial transactions. I bet he'd be a moocher if the tables were turned and you were offering something for free. It's a sign of someone who is very self-centered.