What are the stipulations for a mixed marriage to be valid in the Catholic Church? If a devout Catholic woman wants to marry a Baptist man, what what must be made to make the marriage valid to the Catholic Church if they have both gone though the Catholic wedding preparation but would like to be married in a non-catholic church? Would the Catholic Church consider such a marriage valid? I have heard that a special dispensation from the local bishop is necessary; How should that be acquired? If the marriage is valid, is it also allowed to baptize the children Catholic?
According to the 1983 Code of Canon Law, mixed marriages (where one party is non-Catholic) require permission from the "local ordinary" or bishop (Can. 1124). The children must be baptized and raised Catholic, and the non-Catholic has to be okay with this (Can. 1125). They must have a Catholic wedding and cannot "have another religious celebration of the same marriage to give or renew matrimonial consent before or after the" Catholic wedding (Can. 1127 §3).

If a mixed marriage of doubtful validity already exists, you need to talk to a Catholic priest about convalidation or radical sanation.