Renton,
You must attend Mass if yo truly want ti be a catholic christian. Attending RCIA requires also committing to Mass attendance. catholics are expected to not only participate every Sunday but also other Holy days of obligation.
Your ‘friends’ gave you bad advice but you must also have been less than thourough in registering with the parish and when making your first confession.
When I registered with a parish the first time the questions were fairly straight forward and went beyond just name and address. It requested information on our entire household, names of every member and sacramental status: Baptism, Confirmation and Eucharist [location, name of church or parish and date or lack there of for every person], marital status etc. Marriage rite performed when and where etc.
Similarly, when i made my first confession, the priest knew it was my first confession and that it was a preparation for reception into the church and first communion etc. It seems odd that in two years, having a first confession experience [and others presumbly] plus other interactions, it was not ever apparent to you or any other catholic that your situation might be irregular.
You never witnessed any RCIA rites or rituals in two years [Rite of Welcoming, Rite of Sending, Rite of Election, the Dismissal form Mass during Lent or the Easter Vigil] nor read any parish bulletin or diocesan paper article about RCIA and wondered about your status? This almost seems bizarre…You never read the conditions for reception of Eucharist in the front of the missal and wondered if you were supposed to receive the Eucharist at Mass" You never thought to explained your situation to the priest or other parish staff person and ask if you should receive?
Take this as a wake up call to practice your faith more diligently, learn about what it means to be a catholic Christian. What else are you missing in your spiritual and faith life? Our faith is a wonderful blessing and a life full of graces…join the RCIA, bring your fiance and learn…
And just to head off another area that can raise its “ugly” head [and because your friends and parish seem timid]…
Have either you or yur fiance been married befoer and civilay divorced? If yes, then that party will need to seek a decision on the validity of that marriage before being able to obtain a Catholic Sacramental Marriage or Blessing. It does not matter that both of you are ot yet catholic and your faith tradition would not impede your seeking a second marriage. The Catholic Church presumes that the marriage of a Christian [or non Christian] - civilly or in a religious ceremony marries validly and sacramentally.
For example: If you married before a Justice of the Peace - it is presumed to be valid until determined otherwise and yet the same ceremony for a catholic would not be valid. if you and or your fiance is upset now, being surprised by this can be far more tramatic!