Answer # 1
No. The Roman Catholic Church practices closed communion, and doesn't have any shared sacraments arrangements with other churches. For example, the Church of the Holy Apostles in Virginia Beach, Virginia has a common seating area for its Anglican and Roman Catholic congregations. But there are two separate altars, and therefore two different receiving lines depending upon one's denomination.
Answer # 2
Yes.
There are currently two canon laws which provide for this:
Catholic ministers may licitly administer the sacraments of penance, Eucharist and anointing of the sick to members of the oriental churches (e.g. Greek Orthodox, Russian Orthodox, etc.) which do not have full communion with the Catholic Church, if they ask on their own for the sacraments and are properly disposed. This holds also for members of other churches, which in the judgment of the Apostolic See are in the same condition as the oriental churches as far as the sacraments are concerned. (CIC Canon 844, § 3, cited in The Compendium to the Catechism of the Catholic Church)
Similarly,
If the danger of death is present or other grave necessity, in the judgment of the diocesan bishop or the conference of bishops, Catholic ministers may licitly administer these sacraments to other Christians who do not have full communion with the Catholic Church, who cannot approach a minister of their own community and on their own ask for it, provided they manifest Catholic faith in these sacraments and are properly disposed. (CIC Canon 844, § 4, cited in the Compendium to the Catechism of the Catholic Church)
These two canon laws make more explicit the suitable circumstances which the Vatican II document Unitatis Redintegratio speaks of concerning the Orthodox churches:
These churches, although separated from us, yet possess true sacraments, above all - by apostolic succession - the priesthood and the Eucharist, whereby they are still joined to us in closest intimacy. Therefore some worship in common (communicatio in sacris), given suitable circumstances and the approval of church authority, is not merely possible but is encouraged. (Flannery 1996, p. 515)
REFERENCES
Ignatius Press. The Compendium to the Catechism of the Catholic Church, (San Francisco, CA: Ignatius Press, 1994).
Flannery, A. ed. Vatican II, The Basic Sixteen Documents - Constitutions Decrees Declarations, (Northport, NY: Costello Publishing Company, 1996.)
Communion typically comes before confirmation in the Catholic Church.
No, it is not in communion with the Catholic Church.
No, a Catholic should not receive communion in anything but a Catholic Church.
After first communion in the Catholic sacraments, the next sacrament is typically confirmation.
Roman Catholic AnswerFirst, let me extend my condolences on the death of your Nana, I am so sorry. If you are a baptised Catholic, who has made his first Holy Communion, and have gone to confession, then, of course, you may receive Holy Communion. If you are not a baptised Catholic or have not made your first Holy Communion, then you make what we call a "spiritual Communion" which is what a Catholic would do if they have not been to Confession, asking Jesus to come into your heart.
Yes, it is possible and it is not proper to use the word "Get". It is "Receive" Communion.
In the Catholic Church, the next is traditionally Confirmation.
After confirmation in the Catholic Church, the next sacrament is typically the reception of the Eucharist, also known as First Communion.
Yes.
Based on my knowledge of RCIA, I believe that confirmation candidates also go through the process. However, the process is certainly not as involved as receiving all four sacraments (Baptism, First Communion, Reconciliation, and Confirmation). The best answer really is: talk to a clergy member or Catechist in your parish office.
Yes. Further, you can not have any outstanding unconfessed mortal sins.
A Roman Catholic will never receive communion in other churches.