So that will be 7pm on a party night then I presume? That's really helpful, thanks.

Think I will go for that as we already have an ADR for LTT earlier on during the holiday.
T
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Could be or they could take the last ADR around 6:30p, I'm not 100% sure when the last seating is but they are open till park closing.
I always make my ADR around 5:30p.
The CM over the phone will know the last seating for the day when you call though so they could tell you.
In the past, I've never seen cookies and hot choc distributed at CP but I did
MNSSHP last year so it could have changed last year. At the parties I've been to, hot choc and cookies were distributed right across the way at the Tomorrowland Terrace Noodle Station and other various land locations; listed below.
HERE's the map for MVMCP with the locations.
Treats are being served throughout the evening -- Treats include Hot Chocolate with Marshmallows and cookies and sliced apples and Apple Juice at:
-- Diamond Horseshoe in Frontierland
-- Tomorrowland Terrace Noodle Station at Tomorrowland
-- Scuttle's Landing in Fantasyland
-- Columbia Harbour House -- Liberty Square