In as much as many of would prefer not to see Indians or Chinese or even Ruskies, times have changed and a small fraction of those populations who have higher spending power are outnumbering westerners.
Pattaya is certainly an exception as most indians visiting appears to be short stays, only to party and return. growth in the number of india focussed nightvenues or those clubs on WS that only let in chinese, koreans or japs are thiving
Having said all this, the focus in the OP is about attracting wedding groups from india. I have seen some of these in Khao Lak, they splurge and couple of flight loads per wedding is great business for establishments in thailand. Not for the night venues, unfortunately. Can you imagine the income/day/person for these groups...