If a guest becomes ill during the Seder and they need to go home to recover/rest, can they continue the Seder at their home, if they feel better later on? Or must the entire Seder be done in one place?
The seder can be continued in another place. Regarding the meal itself, if the person has doubt when washing for the matzoh that he might have to change places in middle of the seder he should have this in mind when saying the bracha, that he might change places during the meal.
Refua shleima to all