Advice on wedding photography

Hi i’m gonna be bringing with a Olympus OM-10 to my girlfriends moms wedding unprofessionally but still wanting to get nice photos, no flash.

What film stock would be perfect for some outdoor shots when it is gonna be partially outside on a pretty sunny day but then also an inside venue too which is pretty big?

Right now only have a 28mm 2,8 because my 50mm 1,8 fell in the water when photographing by some cliffs lol Max iso on my camera that I can set is 1600 and I’m looking to shoot in color

Any more tips are gladly accepted! Thanks in advance!