Yechiel Michel Epstein

“ Therefore, as people might think that one is eating a Pesach sacrifice in this era [when the Temple no longer stands] outside of its appointed area [Jerusalem] , the stringency has been adopted to refrain from eating any roasted meat on the Seder night, even from animals which could not be brought as a Pesach sacrifice.
Those who have this custom pass it down to their descendants. Upon this the verse "Listen, my son, to the reproof of your father..." is applied. (Pesachim, 50.1) . Our countries are those in which the custom not to eat is practiced. ”

“ One should be careful to avoid excessive alcohol during the meal in order to avoid being caught by sleep and missing out on reciting Hallel and the remainder of the Seder service. A wise man who has 'eyes in his head' understands the great holiness of this night and carries out the Seder [in a proper manner] with great joy. ”