FYI, since there's been some conflicting discussion here re the ability to modify CP packages, thought I'd share my experience.
1st tried chatting with DVC MS, they indicated that they couldn't directly access the dining packages & suggested I call WDW dining, direct
i had no problem doing so!
a 12 min wait time & CM was able to change our le cellier CP package, adjusting it from 4 to 2 pp & keeping the same show time.
I did receive a new conf # that is appearing in my
MDE.
I definitely suggest to call in & modify vs showing up @ the restaurant
good luck to all!