They aren't required.
Not required but as to put your group at ease AND help the wait staff, I would.
You cannot make reservations at ihop, but you can call and let them know a time you will bring your group so that they can be prepared
It's not required but I would, just because depending on how busy they are they may not be able to seat a large group
Not necessary
Yes i hop has seating for large groups.
Not required
Helpful, but not needed
I think so
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