How long can pumped milk stay in refrigerator??

Ok, so Sunday I’m baptizing my little guy, but it’s an hour and a half away.. I wanted maybe two bottles, for the road or just to have on hand.. (he has not drank from a bottle in MONTHS, and I plan to still breastfeed, but since I’ll be around family, I want a bottle so they can hold and bottle feed, just because... though I’m pretty sure he’ll reject the bottle lol)...

Ok

So it’s 6:15am

And I will be putting this in refrigerator, when will it not be good anymore... and, it seems to have a lot of let down and not so much of the creamy breast milk.. not that that’s bad, jus sayin, it’s not as filling, rt?

Anyhoo.. so yes.. when should it be discarded..will it be good until noon on Sunday?

One more question! How many ounces in one feeding, is normal for a six month old??