Science

Dear Danish,
What do you mean by Hotel Manager? There is nothing called "Hotel Manager" in a 5 star property. They call the over-all In-charge as "General Manager(GM)". Hotel Manager is generally for small hotels where Manager looks after the complete operations. Otherwise, in big hotels, you have separate Managers for all 4 core departments who report to the GM.
If you want to get into a Leadership role, you must have Leadership skill and good communication skills. After joining the MT programme, you gradually move up the ladder.

It's your choice. If you are good in subjects practically, then you can approach for B.Tech. But, if you have interest in theoretical part of subjects, then you should seek for B.Sc, and the selection of stream should be such that your goal should also be achieved by that. So, all of it is your choice. And, the colleges suitable for the stream can be found on official website of shiksha.com through google.