theme park and birth control

I'm gonna be out all day in the sun and I'm just wondering if my pill (combo pill) pack will be okay in my purse for hoursssss sense I take the pill at night I'm going to be on my 3rd to last active pill. So the options are keep them in my purse and take it on time or Wait tell I get home and take it 1 or 2 hours late. Will I be ok either way oooor what?