Details about different religion's register(love)marriage procedure?

Court marriage and registered marriage are one and the same thing. Get hold of a good lawyer and proceed as per his advise. In registered marriage religion is not a issue at all - what is required is two consenting partners of legally marriageable age and some formalities. The doentation is also minimal - age, identity, residence proof etc, the requisite procedure and necessary fees. You are working in MNC, so financials will not be an issue, at the most 5K including the lawyers charges. Best of luck.