First, welcome to the path of conversion! You will find it contains more than you can ever imagine now.
Cardinal Arinze, a particularly wonderful leader, stated that we should avoid going to another sect’s religious ceremonies. In unusual situations, like marriages and funerals, it is okay as with other very extraordinary events.
It is not acceptable to attend, let’s say, Episcopalian mass as a matter of practice. Those who suggest otherwise are mistaken on this point.
The reason for this is that God established a single, universal Church. With that comes a structure to govern and teach the faith. Some Protestants say that they are part of the ‘universal, catholic church.’ They might think they are, but they are not.
To be connected with the Church, one must accept all that the Church teaches. And this can be a scary notion for those considering conversion. I was in the same position you are now. My best advice is don’t get side tracked; 2 000 years of history (plus thousands before Christ’s coming) of every culture means there will be a LOT of stuff in the Catholic Church.
If you accept that the Church is the true Church, then you don’t have to worry about rationalizing every aspect of it. Similarly, you might find ways to serve and worship that differ somewhat from others. As long as we follow the same morals and dogma, this is perfectly fine and to be expected. Everything enhances our love, worship, and desire for perfect union with God.
One last thing: the word ‘Catholic’ has become charged and loaded, entirely unfairly. In other sects, ‘Catholic’ means ‘superticious’ or ‘legalistic’ or ‘ethnic’ or ‘scary men in elaborate robes.’ Catholic is derived from the Greek καθολικός, which just means ‘universal.’
Let us know how your conversion progresses!