BOC and RCC relations?

[DanielM]

Ah ok, when you said 'attend RCC mass(with or without communion' I presume you meant to look at both.

There is no problem that I can see with attending a Catholic mass. I know many Orthodox that attend CofE or Catholic services sometimes. It is simply a metter of not forgetting to attend Orthodox when you can due to fulfilment of the Sacraments there such as confession and communion.