I didn't read it as the girl was ungrateful or acted petulant. Uninformed and asking a lot, yes. But she's obviously unfamiliar with timeshares in general and DVC in particular so the questions she asked are quite common -- and again as the OP acknowledges, the girl thought the timeshare nights were free therefore didn't realize asking to extend was asking for more. There are plenty of vacation destinations where a certain type of room comes with perks -- be that discounts, free passes, special access, meals, or what have you. It sounds like OP secured the reservation early (which those of us here know has to be done early) but the couple didn't fully have their plans finalized and simply didn't understand. She didn't ask in the best way, but poor communication doesn't make her intent rude and ignorant.
You're reading an attitude on the girl that I didn't get -- neither of us was actually involved so we don't really know. I give the benefit of the doubt.
You’re right. None of us were there. None of us know the bride or the OP & don’t know the family dynamics or anything like that.
However, that said, according to the OP’s account of things - -
The OP offered DVC at the Grand Floridian to the bride as her wedding gift.
The bride accepted the gift.
The bride came back & then said, “Well, we can’t afford tickets. Can you pay for those?”
The OP said she couldn’t. The OP’s parents then offered to pay for the tickets as THEIR gift.
The bride then decides they also want to visit Universal, so she comes back yet again (including her own parents in the text), to not only ask for additional days at the DVC but ALSO to mention that, like the Disney tickets, they can’t afford Universal tickets either, so, if the OP doesn’t want to pay for their Universal tickets, the bride will see if someone else can pay for the Universal tickets.
This is, of course, in addition to having a “Help Us Pay for our Honeymoon” link on their wedding gift registry site.
Even not knowing anything at all about Disney or Disney DVC or maybe even Universal or, going even further, in her whole entire life, her own parents have never included her in any vacation planning & have always paid for everything, so the bride knows nothing about any kind of vacation realities, none of the above strikes you as even a little entitled & rude & greedy?
When someone gives you a gift - even if you don’t know the value of said gift - it’s okay to come back & ask for MORE?