We've had mixed experiences. Way back when the plan was new, we were allowed to get any appetizer we wanted, one per person regardless of how many people it was intended to serve. On the next visit, we were told we could each get single-serving starters or two people could combine their appetizer to get a for-sharing choice. And on the visit after that, we were told the plan could only be used for single-serving starters, no matter what. So basically I'm no help at all because on three DxDDP visits, we got three different sets of rules.
I'll be back and on the plan again in March, so I'll report back on how it goes.