seats can not be assured
if there are seats vacant under the nri category then they will be offered on the 25th of july in nri spots in the rank order for those who attend them
you should come with all the necessary documents and the fees presribed under the nri.
check this site and see the instructions under councelling general instructions forknowing what documents are required
fee under the nri category is Rs 243300 for the first year and from the second year onwards it is same as that of the general payment candidate with 82300