Wirelessly posted (BlackBerry9630/4.7.1.40 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/105)
Demand? No. After all, each of us is actually only assigned a single seat. And it is an assignment more than a suggestion, thought there is some gray area there.
But If someone is in a middle I'd not insist that I get my 3 seats. That's just bad form, IMO.