I think that this first sentence lacks the first part, such as 'うれしかったことは、' or something like that. Anyway, though my English isn't good, I'll try to translate. I hope that my translation makes sense. I'm ???('glad' or something like that) that I had a photo taken with three pretty girls in traditional Vietnamese dresses called Ao Dai, who took part as an extra. I'd like to come to South Korea next time on holidays.