Thanks for replies.

We have decided to sail on Norwegian Star from Tampa on 7 day cruise. I used cruisecompete.com service to get a quote, one of the TA quoted SJ stateroom for $2536 and can give $150 OBC. Regular sites (like usariwayscruises) price the same room for $2726 and give $100 OBC. But I see that on usairwayscruises.com you can choose GTY stateroom where you might be upgraded to the highest stateroom category, while quote from cruisecompete.com is for specific stateroom only. So, the question here is will cruise line give highest stateroom as an upgrade if choosing GTY stateroom?

Another question is - is SF category better than SJ? SJ seems to have much more space, but comes without balcony. This will be our first cruise and I want to be it perfect.