I had real difficulty with this theme, but while looking through some very old (50+ years) family photos, decided I could join in if I took a very liberal interpretation. These were all taken in Africa.
Ceremonial party (actually Remembrance Day)
Garden party - a picnic in our garden. I suppose it could also be called tea party.
Search party. My sister aged two clutching bucket and spade and not wearing a lot, setting off in search of something in the lake. She doesn't know about this blog or I would be dead by tomorrow!
House party. For some reason when I see these painted huts I always think they look as though they are all dressed up ready to party!
Rescue party. Our car being pushed across a flooded river.
Welcome party. I have no idea who these people are, and I have no recollection of seeing elephants in the road, but I like the picture.