If a Srivaishnava Groom marries a non-Srivaishanava Bride, is he qualified to perform pitru kaaryam (rites performed for ancestors)? For the Bride qualify to perform our traditional rituals and practices, can she undergo Samashrayanam?

When a Groom from Srivaishnava tradition marries a non-Srivaishnava Bride, he is qualified to perform pitru kaaryam.
For the Bride to perform our traditional practices and rituals, she can undergo Samashrayanam.
Doing so such persons become Srivaishnavas and can carry out activities in rituals such as shraddham without any conflict.