The Maharil writes that one should be filled with awe as he fulfills every particular instruction that the Chachomim ordained for the Seder. Even if a certain observance may seem to be unimportant, one should realize that every detail has significance. As the Shaloh writes, “All the mitzvos of the Seder have lofty reasons, both revealed and hidden. It is a mitzva to discuss them and to try to understand them.”
(הגש"פ עם לקוטי טעמים ומנהגים ע' ה)
The Shaloh writes further: The Seder night and all its halachos are filled with kedusha, for at this time HaShem chose us from the nations and gave us His mitzvos. On this night one should refrain from engaging in mundane chatter so as not to be separated from HaShem even for a moment. And by telling the story of yetzias Mitzrayim, we arouse the power of geulah.
(של"ה - מס' פסחים)
In the original Tomchei Temimim yeshivah in Lubavitch, the whole of Pesach, including of course the Sedarim, was celebrated joyously, with almost all of the bochurim staying in Lubavitch to hear Chassidus from the Rebbe Rashab, instead of traveling home.
Many tables were set up for all the seudos in a large room, and a director and an assistant were chosen to take care of all the necessary Yom-Tov preparations for the hundred-and-fifty bochurim. At the Sedorim, one person at each table was appointed as mashgiach, to be responsible for the needs of that table. One talmid was chosen to be the announcer, and he would auction the zechus of asking the Mah Nishtana, filling the Kos shel Eliyahu, opening the door for Eliyahu, and leading the bentching. Following the announcer’s instructions, one table would start Kadesh, and when they concluded the next table was instructed to begin, each table taking its turn. Urchatz was done in the same organized fashion.
In the middle of the room was a table, on which stood a handcrafted menorah of the Rebbe Maharash, and around it the talmidim danced during the seuda. The Seder continued into the early morning hours.
(רשימות דברים ח"א ע' של"א)
