As it says in the question 
I do irish dancing, and about 4 times a year for big competitions we have to travel alot and stay over in hotels for 1 night usually, so two ish days, actually probably just one day cause i'd give them the veggie before i left, and the evening when i got back; i should be getting piggies this year, or early next year, so wondering would they be able to go without veggies for a day or two? I can trust my sister to fill water, hay, pellets and what not, but i doubt she'd go out of her way for veggies, its alot more complicated for piggies! than hamsters!

I do irish dancing, and about 4 times a year for big competitions we have to travel alot and stay over in hotels for 1 night usually, so two ish days, actually probably just one day cause i'd give them the veggie before i left, and the evening when i got back; i should be getting piggies this year, or early next year, so wondering would they be able to go without veggies for a day or two? I can trust my sister to fill water, hay, pellets and what not, but i doubt she'd go out of her way for veggies, its alot more complicated for piggies! than hamsters!
