I failed my 1 hour, passed my 3 hour barely. Yes you do have to have your blood drawn a lot, I don't remember having to pee though. Also, I for whatever reason carry more glucose in the tips of my appendages (ie, fingers) so if you feel you do the same, don't let them prick your finger, just do an actual draw from your arm to get a more accurate reading. Also, the morning of the test, do not eat a sugary cereal or toast loaded up with jam, it will affect the results. Eat something high in protein, like some eggs. And lastly, you will get beyone bored!! Bring an iPad with movies loaded on it or a laptop or a good book that will keep you hooked. At my docs office, I wasn't allowed to leave so they gave me my own exam room with a pillow to climb up on the table and nap if I wanted. But that little exam room gets annoying after the first hour:)