I have encountered different things on the two following Scouting Party spots pictured above:
Spot 1:
1. Have a Albion Scout spawn, attack it (as a hib). No AI spawns. Solo it to complete the event, get full rewards.
2. Have a Midgard Scout spawn, attack it (as a hib). Only enemy AI spawns.
Spot 2:
1. Have a Hibernia Scout spawn, talk to him (as a hib). No AI spawns from either team. He escapes and gives rewards.
2. Have a Hibernia Scout spawn, talk to him (as a hib). Have only allied AI spawn. He escapes and gives rewards.
I hope this is enough data for those of you looking into these things.
Thank you.