We just returned from RPR and received the fruit and water. We got a banana, orange, green apple, red apple, grapes, strawberries and a weird looking pear. The water was a large glass bottle of Evian. Last August we choose the fruit and water and received 3 bottles of the Fiji water and more exotic fruits.
You should receive a welcome gift at both hotels since they are separate stays. But I have read here that HRH is sporadic about giving the gifts. As for the gifts for the kids, at RPR they give out sand buckets. We didn't ask about the Grade A program because the child who traveled with us didn't have his grade card yet. It is separate from the welcome gift and supposedly with the report card the kids get free drinks in the hotel. We did ask about it last August at RPR and were only given a coupon for free dessert at Islands (but you had to purchase dinner to receive it).
Don't confuse the free glass bottle of Evian with the $7 bottle of Evian that will be next to your TV. We hid ours behind the TV and were charged for it ($8.57 total). I called the front desk and it was taken off our bill quickly.