where is Sunshine Terrace? The only reference I can find is Sunshine Tree Terrace in Magic Kingdom...looks like it's just drinks, chips & ice cream there.
Are you maybe talking about Sunshine Seasons downstairs in The Land building (down by Soarin')? If that's the one you mean, we have seen it open & still serving during Illuminations on a night Epcot officially closed at 9:00 (so it would have been about 9:15) Also saw them still serving food on an Epcot EMH night in May about an hour after Illuminations so that would have been like 10:15. We weren't actually buying anything there, just walking through to get to Soarin' but seems like there was plenty of people in line at all the stations.