That’s lovely, Larry5.
Similar experience here. My 2.5yo GD is here and she remembers everything about our house even though it’s almost six months since her last visit. Our cats have been loved to death! ?
Your comment about speech seems to be echoed by others. My GD has good language skills anyway but she now converses like an adult with all the little extras that mean you can just have a conversation with her.
My son’s 3yo has also come on in leaps and bounds, speechwise, when previously it was quite difficult to understand her, and a friend’s 4yo GD who had very garbled speech has also made huge strides.
I don’t know if it’s because they’re spending more time with adults rather than children their own age but it’s been a marked difference.