MM, I'm so sorry you're going through this with your neighbors. I remember, quite a while back, when you posted on the DIS about all the terrible problems you were having with your neighbors in New Hampshire and how it even played out on that town's discussion board! I'm sure it was very upsetting, and that you looked forward to a new beginning in Florida, and perhaps that isn't working out the way you had hoped.
I started reading this thread before Christmas, and got caught up in 3 days of constant (exhausting!) celebrations with our families. But the one thought that kept coming to my mind was...
what in the world DID these neighbors say when you brought them the cookies? Did they close their doors in your face?? Did they say ANYTHING? LIke, perhaps "how beautiful! What a lot of work you put into them" but inadvertently omit the actual "thank you"? Did you just drop them off on their doorstop, in which case maybe they've been so caught up with holiday celebrations and just haven't had a chance to thank you? Did your grandson bring the cookies to the neighbors, and perhaps you just didn't get the story from him quite right? I hope you'll enlighten those of us who have taken an interest in this problem.
I ran into DS's art teacher the afternoon of the last day of school...DS had brought in a homemade brownie mix in a jar and a homemade Christmas card. She said she told DS to tell me how much she loves my homemade card, and has kept all of them for the last 11 years, since oldest DD began as a student there. Afterwards, I asked DS if everyone liked their gifts...he said "uh huh" as he downed snacks, parked in front of the TV, celebrating the last day of school. I asked what Mrs. C said...he said "she liked it". I asked if she told him to tell me she has saved all our cards over the years...he said "oh yeah."

Are all 10 year old boys space shots?
Do you have an otherwise good relationship with these neighbors? Have you socialized with them at your house or theirs? (I know you're a master at barbecuing!) Did they enjoy themselves? Have they ever indicated that perhaps they'd just like a more casual relationship, and would prefer to keep to themselves? Sometimes, the nicest people just like their privacy and feel uncomfortable if they feel that a relationship is being forced on them. Of course, none of that excuses the lack of a thank you...altho, like I said, I can't imagine what DID transpire...but perhaps they're just backing off a bit. And again, it may just be a matter of not having had the time yet...
As for your DD not wanting to take the cookies to work...I can't imagine. My wonderful mom has rescued me on more than one occasion with cookies to bring to a party (I apparently was born without her cooking/baking gene

), altho, sadly, she's not up to baking anymore.
And your grandson...how old is he now? Maybe he's not interested in going to a theme park with Grandma. I wonder how long my kids will want to come with us on our vacations; DD keeps talking about those graduation parties they have there, as if they're going to be more fun than going with us!
But you're right...if you don't get the reaction that's important to you from people, maybe it's time to move on. We began going to WDW for Thanksgiving instead of staying home because my sister insisted that her kids just COULDN'T get up early to catch a bus from NYC to arrive in RI by 1:00...they wouldn't arrive until 4 PM, and honestly, I'm not having my family sitting around all day waiting for them, because they can't make the effort.