No - Not an obligation
However, I HIGHLY encourage attendance at the Vigil. It is life affirming to see the Church perpetuated in Catecumens, and also to hear the whole history of salvation through scripture. Awesome!!
Apparently, if you DO attend the Vigil it counts for your Sunday obligation. I have some personal heartburn with that, but oh well. I’m not the Pope. Whether obligated or not, I can’t imagine a devout Christian not wanting to observe:
The Triduum Mass which begins on at Sundown on Holy Thursday, and Ends at the conclusion of the Easter Vigl Mass on Holy Saturday. This includes three “meetings” of the faithful all under the SAME MASS. There is no concluding rite until after the Vigil. It is all one mass. Seems to me if you start it, you should finish it. That would inlcude all the meetings of the body. If you went last night, you ARE STILL AT MASS today, (and hopefully fasting).
Thursday evening, Friday evening, and Saturday evening.
Easter Sunday - as a joyous celebration of the ressurection!!!