Sam2: You provided a memory on the chiyuv to drink on Purim night. Is there any mekor not to drink Purim night? And what leads you to think “we” pasken which way?
And, is not the basic halacha in S’A that the chiyuv on Purim is to get drunk, not simply to drink more than usual? (Granting the other opinions that are more lenient in allowing one not to get drunk.)