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Susan W is a trusted source on General Cooking.
Dried chili peppers? At least 3-5 days. You could also freeze it if you want. I often freeze things to extend the life for a couple of days. If fresh chilies, I'd keep them separate or they'll be mushy and disintegrate.
Cynthia is a trusted source on Bread/Baking.
Your lovely marinade sounds quite simple. I suspect that the better question might be how long your meat can sit in the marinade. I'd suggest whisking together the marinade, pouring it into a large ziplock bag, adding the meat, then refrigerating it overnight before your expedition to the beach. Be sure to ice the bag(s) well before leaving for the (serious envy here) beach.