When it says how many people are in your party for the membership reservations does that mean how many people have memberships that are going or how many people are going altogether

Going all together.

It's how many people are going with you.

How many ppl including you.

How many are going together, including yourself. This is independent from any membership, season pass, or day ticket admission. Your total number of people visiting the park, needs to match with the amount of people showing up.

How many people are in your party!