First, there are lots of posts here about the club and lab...do a search and you'll find more info than you ever wanted!
You will be given a kid's navigator when you register your child at the club. It will list all the activities for each day, as well as the meal times. Any child who is in the club or lab area at meal times is taken to the meal. So...no, you do not have to pick them up.
Yes, you can take them in PJs. THey do have sleep mats for the young ones, and they if they fall asleep, they will literally slide the mat to an area where they won't get stepped on!
There are no drinks or snacks in the club or lab except at the scheduled meal times. Water is available at all times. You can pick up your child at any time and take them to deck 9 for fruit, ice cream, etc.
There is a full day program at Castaway...your child can attend any or all of it. You do need to be aware that the CMs are not allowed to put sunscreen on the children. They ask that you sunscreen them before drop off and return at least once during the day to re-apply the screen.
The kids in the program will NOT be taken swimming by the counsellors at any time. Pool, ocean time is with parents supervising.
I always ask DD (privately, in the cabin) if there was any counsellor in the lab who made her time special and give them a small gift. The standard gifts are gift cards to Target or
Walmart as these are the stores that the crew bus goes to when they are in port. Counsellors are not a tipped position, and no gift or tip is required. If you give an "unspecified" tip or gift, they are either divided among the counsellors or used for a group party (I've been told both by CMS, so maybe it used to be one way and is now the other.) If you put it in an envelope with a counsellor's name on it, then it is a gift to that CM. There are about 12 counsellors in each kid's area, so I don't find it practical to give something to each.
You will have a beeper (alphanumeric) so your child can have you paged if needed or wanted. You'll get a message like "Tommy would like to see his mommy now" or "we need you right away"...obviously indicating how urgent something is.