On erev Pesach, starting from a ½ hour before mincha kitana [9 & ½ hours into the day], you should not eat a lot until so as to eat the seder with a good appetite.

Even a pauper must eat the matzoh with haseiba [leaning]. He should not get less than four cups of wine from the public kitchen.

Pesachim 10:2

We drink four cups of wine by the seder. The first cup is kiddush. Bais Shammai says first you say kiddush and then the bracha on the wine. Bais Hillel says first you make the bracha on the wine and then the bracha of kiddush.