I look at religion and spirituality as 2 different things. DH and I just happened to both be raised RC, and so it was easy to bring in the cultural things, the baptism. The first communion was a little trickier since they wanted 2 years of Sunday school. I had 3 weeks before mine and still Catholic. So I ordered the 2nd year book and we did a crash course over a week and did the first communion in Cancun. It was really nice, it was Easter, the priest made it very special. She had a communion candle and went up to the altar and they lit it off the big candle. Culturally it was a big thing.
And doing the crash course myself I was able to explain about religion, why they created it the way they did, talked about power, control, men in charge, whether it was pope, priest or king. Religion helps explain a lot of history. Without it, you leave a vacuum.
On a spiritual side, I believe that is a path everyone has to figure out on their own. You take what feels right, discard what doesn't and you find your own truth.