Yes, all indulgences are available to any Catholic eastern or Latin It could also be a partial indulgence, if something is lacking (like Holy Eucharist or Holy Confession, or perfect contrition, or vocal prayers for the intentions of the Holy Father), other than grace.
Three conditions for the plenary indulgence
And so the Supreme Pontiff, motivated by an ardent desire to foster in Christians this devotion to Divine Mercy as much as possible in the hope of offering great spiritual fruit to the faithful, in the Audience granted on 13 June 2002, to those Responsible for the Apostolic Penitentiary, granted the following Indulgences:
a *plenary indulgence, *granted under the usual conditions (sacramental confession, Eucharistic communion and prayer for the intentions of Supreme Pontiff) to the faithful who, on the Second Sunday of Easter or Divine Mercy Sunday, in any church or chapel, in a spirit that is completely detached from the affection for a sin, even a venial sin, take part in the prayers and devotions held in honour of Divine Mercy, or who, in the presence of the Blessed Sacrament exposed or reserved in the tabernacle, recite the *Our Father *and the *Creed, *adding a devout prayer to the merciful Lord Jesus (e.g. Merciful Jesus, I trust in you!");
A
partial indulgence, granted to the faithful who, at least with a contrite heart, pray to the merciful Lord Jesus a legitimately approved invocation.
For those who cannot go to church or the seriously ill
In addition, sailors working on the vast expanse of the sea; the countless brothers and sisters, whom the disasters of war, political events, local violence and other such causes have been driven out of their homeland; the sick and those who nurse them, and all who for a just cause cannot leave their homes or who carry out an activity for the community which cannot be postponed, may obtain a plenary indulgence on Divine Mercy Sunday, if totally detesting any sin, as has been said before, and with the intention of fulfilling as soon as possible the three usual conditions, will recite the *Our Father *and the *Creed *before a devout image of Our Merciful Lord Jesus and, in addition, pray a devout invocation to the Merciful Lord Jesus (e.g. Merciful Jesus, I trust in you).
If it is impossible that people do even this, on the same day they may obtain the
Plenary Indulgence if with a spiritual intention they are united with those carrying out the prescribed practice for obtaining the Indulgence in the usual way and offer to the Merciful Lord a prayer and the sufferings of their illness and the difficulties of their lives, with the resolution to accomplish as soon as possible the three conditions prescribed to obtain the plenary indulgence.
vatican.va/roman_curia/tribunals/apost_penit/documents/rc_trib_appen_doc_20020629_decree-ii_en.html