Meet and Greet/JR pass/Suica Card

Hello. We want to sign up for the meet and greet and had a few questions:

1. The website says "Our assistant will help you reserve seats according to your itinerary (in case of long queue, booking may only be done for the first day of use)." - does this mean you can only help us make one reservation? What if we want to make multiple reservations?

2. Is it ok to buy the JR pass when we get there?

3. Can the meet and greet person help us purchase a Suica card when we land and help us load money onto the card?

4. We are arriving in Haneda airport Wed Nov 13 and I will book the meet and greet tomorrow, Tue, Nov 5, is this enough time?

Thank you!