Quite amusing. The dialogue didn't seem very realistic at all, but everything else was good.
I think this could have been longer to give the characters more personality. The sister was a dreamer, but the brother was a bit more complicated and needed more time for the audience to get a feeling for his character.
I love the potatos! Potatos for everyone!

hm... this was so hilarious...i liked it...and what i picked up from this play was "be careful what you wish for"...thanks for sharing and happy writing!
p.s. i am in the process of working on my first play called "clifford's big adventure in space"...be on the look out for it!