The longest I've ever been away from LO is 8 hours. She's 6 months old now but only eats a little bit of solids so is still mainly breastfed. I have to go to get trained for a class I'm going to teach and the training lasts fri evening and is most of the day saturday and sunday. The training takes place 6 hours away by car or plane (it's just as long by plane because of the transfers).
They will pay for my flight/hotel, however, I'm pretty sure they will give gas money if I choose to drive. If I drive my husband seems willing to come with me though he's writing his thesis when not doing experiments so it would be a long trip for him and he'd be pretty busy on baby duty.
So should I have them come with, which would make it easier to breastfeed or leave them behind and hope a family member could come help him out over the weekend, I'm just afraid she'll be ballistic and no one will get any sleep since she usually eats less when I leave her and waits for me to come home to nurse