LSUmom4kids, thanks so much for the info on the Dolphin kids club. I never knew that.
(my youngest won't be 4 for 3 more years, but still good to know.)
Now with out judging I will let the OP know my experience on leaving kids in the resort room while we went out. It was at BCV in 2005. My then 13 year old niece was with us and it was rainy day. The kids were back in their room, the baby was sleeping and the then 3 year old was watching a video on T.V. We had food in the room for the kids, but DH and I were hungry. My Niece suggested we go out to eat, she would be happy to watch the kids in the room for a few hours. Now we let her watch the kids at home, it sounded like a good plan. We took my cell phone, and left them with DH's phone. We went to dinner at a restaurant in the resort (got in right away after talking with a kind CM at the concierge desk.) We had a nice dinner, felt comfortable the whole time, and stopped at Beaches and Cream for a Sundae to take back to the room for everyone to spilt. After we all went to Epcot to see the Fireworks. (We should of stayed home and played games because of the rain, but after the ice cream they needed to go out for a while.
)
Anyway this worked well for us. But in all honestly as the OP mentioned everyone child is different. The cell phones, being still in the resort and the fact that I trusted my niece helped. Also it was rather early still, we were back in their room before 8:00 that night. I would have not trusted my Nephew with the kids, or alone for a short while. Every kid is different.
I know my DH says that when he and his older brother were at WDW as kids (or teens) they were so warn out one day their parents went to Ecpot and left them to sleep and watch T.V. in the trailer (at Fort Wilderness. I think they were around 11 and 13 years old. Of course this was also over 20 years ago. Maybe they were older, because Epcot was pretty new when I went and was 13 years old.
edited to add that I also felt more comfortable leaving my niece in a postion of responibilty then say by herself or with a friend (or good forbid her brothers!
)
Anyway, no flames to the OP for asking a question. I hope she has a great trip.

Now with out judging I will let the OP know my experience on leaving kids in the resort room while we went out. It was at BCV in 2005. My then 13 year old niece was with us and it was rainy day. The kids were back in their room, the baby was sleeping and the then 3 year old was watching a video on T.V. We had food in the room for the kids, but DH and I were hungry. My Niece suggested we go out to eat, she would be happy to watch the kids in the room for a few hours. Now we let her watch the kids at home, it sounded like a good plan. We took my cell phone, and left them with DH's phone. We went to dinner at a restaurant in the resort (got in right away after talking with a kind CM at the concierge desk.) We had a nice dinner, felt comfortable the whole time, and stopped at Beaches and Cream for a Sundae to take back to the room for everyone to spilt. After we all went to Epcot to see the Fireworks. (We should of stayed home and played games because of the rain, but after the ice cream they needed to go out for a while.

Anyway this worked well for us. But in all honestly as the OP mentioned everyone child is different. The cell phones, being still in the resort and the fact that I trusted my niece helped. Also it was rather early still, we were back in their room before 8:00 that night. I would have not trusted my Nephew with the kids, or alone for a short while. Every kid is different.
I know my DH says that when he and his older brother were at WDW as kids (or teens) they were so warn out one day their parents went to Ecpot and left them to sleep and watch T.V. in the trailer (at Fort Wilderness. I think they were around 11 and 13 years old. Of course this was also over 20 years ago. Maybe they were older, because Epcot was pretty new when I went and was 13 years old.
edited to add that I also felt more comfortable leaving my niece in a postion of responibilty then say by herself or with a friend (or good forbid her brothers!

Anyway, no flames to the OP for asking a question. I hope she has a great trip.