A couple of quick hit thoughts:
1. Check the resort activities board, it's a good way to keep busy during a resort day, especially if weather is iffy. We did ceramic painting with our daughter last trip, they do other crafts and things which I know aren't unique to VGF but are still nice.
2. We did citricos two trips ago as a date night while we had some child coverage, and loved our experience. Food and service were both worth it, and we didn't have a reservation, we just waited out the walk up line with one drink at enchanted rose which was also top notch. That said there were kids in there and there was enough spacing and ambient noise in the restaurant that I don't think having kids should be a concern. I can't speak to the quality of the kids eating experience since it was just adults, but our food and drink was top notch. Narcooses was still closed at the time so we haven't tried that yet (our one trip since was only a weekend before a cruise so we mostly ate in parks).
3. October is likely warm enough to still have a pool day and the
DVC pool is pretty fun. Typical pool activities (slide, games, guess that song, etc) but also a good pool bar and the service to our seats has always been good too. The splash area is nice, but probably a bit young for yours at least for more than a few minutes.
4. To be honest, I found out experiences with grand Floridian cafe to be pretty mid. You will probably eat there for convenience sake, but I'd caution expectations, weve eaten a few times and always felt it was just fine.
5. On day 1, go stock up in Basin on some bath bombs or shower steamers. With a 2BR, you will have a nice bathroom and usually the master has a good tub to make the most of their best products.
6. Like others note, don't be totally afraid to visit the other bay lake resorts. It won't kill your VGF vibe to walk to poly or take the monorail to contemporary. Gasparilla is nice, but depending on how long you are there, it can get old, so going to poly is a nice chance to grab a different quick service or cocktail. I know the community hall at BLT is supposed to be for BLT guests, but I'm not sure how closely they monitor that if you try to sneak in, maybe someone else out there has tried, but we've spent time there before too and had fun.
7. If you are able, leverage the walking path. The walk to MK is super pleasant, especially at night of you stay until park close. This was such a great addition and honestly is fun by itself, we occasionally have gotten out the stroller and just walked to BLT and back for the atmosphere on a slow night. Also generally just explore the grounds and enjoy them in your down time
8. Caution that there is a lot of active construction that VGF and at least in July, it definitely was noticeable. I don't know if by October it will be more contained to the lobby and less outside, but he patient and knows that it's temporary. It didn't impact sleeping hours or the pool area, but you noticed it during the day while roaming the grounds. Don't be discouraged by it!