I just don't believe this one. Just don't.
Ok, I can totally get having hamburgers and hot dogs. But . . . for THREE people? I don't think anyone would bother with both; one or the other would do.
Also, if Ms. LW is so wonderfully awesome, why couldn't she find anywhere else to spend the Fourth? Surely someone as fabulous as she is must get boatloads of party invitations for all the holidays, so why did she have to lower herself? From the sounds of it, even staying home would have been preferable.
And if the hosts (I refuse to use the word the LW did) just wanted to stay home and watch TV, which they would have had every right to do, as there's certainly no law requiring everyone to watch fireworks on the Fourth of July, why did they "invite" her?
Probably more like - LW has nowhere to spend the Fourth. Then she remembers her acquaintance who lives in a nice neighborhood which will probably have a really good fireworks display. She asks the friend if she's planning to go, and friend says, "No, not really; we plan to stay home and catch up on some TV we've missed."
LW pushes until finally friend says, "Ok, look, if you want to see the fireworks on our side of town so bad, fine, but you'll have to drive, because we have no desire to sit in the traffic and walk all that way."
LW says "Great! I'll bring food too, we can light the BBQ and make a day of it!"