Welcome to the group, princessnthepea
Do not worry about the Kids Club. You will be like the other parents and have to drag your child away from the club because she's having to much fun. They offer so many activities and the kids do a lot of neat things and meet the characters all the time.
As for Dinner time, unless you request a table by yourself, you will be matched with another family similar to yours. Our last trip in June, we were paired with a family from England. They were a fun couple with a 6 yo. She and my niece got along very well and would eat dinner with us and then when the counselors came to collect the kids, off they ran to 'school'.
And take your time joining us. They have lots of Ice Cream and it's my intention to put a big dent in their supply this trip.

Also, if you're driving into port, you can show up earlier than your boarding time. We've had different times and they still let you board early. I believe it's their way of controlling the crowds.