Wedding photography trial

[Yisehaq]

Dear All,
I had the chance to shoot in a wedding last weekend. It was an interesting experience and was a bit challenging for me. I didnt get the photos I expected eventhough I tried different setups. Once again, I need your help.

#1 What is a starting setup one can use in shooting with a flash indoors. I had to fiddle so much to get one(exif below). I know it depended on the situation but where do you start usually.

#2 I saw that the picture gets better, when using higher iso(in this case 200). I was so sure to use more than that for fear of noise.
#3 I know that the shutter speed deals with ambient light but the lower it gets obviously will lead to blur, any solutions. So, how can I expose the ambient environment more properly.

Below are my sample photos
all shot at 1/80, 5.6.
except the first one (100) all were shot at iso 200

Top to bottom FEC +2/3, +2/3, +2, +3, +1/3

All pics where shot straight except for the third and the forth photos which where bounced from the ceiling.

No PP what so ever.


I hope that is not to much.