you say your baby is bf. i've had great luck with the sun taking bf stains away! i don't rinse and do a dry pail and when dd poops in a diaper (she often goes in the potty) it does frequently come out of the wash stained. if i dry it outside though the stain will be gone by the time it's dry. amazing really! have a great vacation!
edited to add: i have a friend who rinses all poopy dipes with a sprayer then sprays them with zout and says she rarely gets stains. her baby is older and on lots of solids.
edited to add: i have a friend who rinses all poopy dipes with a sprayer then sprays them with zout and says she rarely gets stains. her baby is older and on lots of solids.