Jean,
Very well said. I try to expose my granddaughters to some finer things in life. When they were very small we did dress up dinners and I make them fun to teach them about decorum at the table. They don't have family dinners like we did growing up. They aren't exposed to some things I was. They are 8 and I often remind them of the fun we had when they were 5 -6 and we wore our best jewels to dinner (actually we wore Mardi Gras Beads). But I used best china etc. to teach them, white table clothes and napkins.
Could they go on RSSC? Yes. Would I take them? No. Why? I'd probably go with them on a Princess/RCCL cruise where there is more activity directed at their fun. I think they'd be bored and I'd want them to enjoy the experiences.