Diploma in Hospitality, Travel & Tourism if you do these course, you will get a blend of all three industries . This program aims to train and develop professionals for hospitality and tourism industryand aviation industries .
If you are planning to pursue diploma courses then it can be done in one year and you get jobs easily at lower level.
But if you are planning for degree courses, then you have to give more time than diploma courses. And with degree in travel and tourism you can get jobs on higher level.
People goes for diploma study for almost 1 year and then they opt for a job but those who go for a degree course spend their 3 yrs in college and then opt for job.
Since Hotel Management is more of a practical study people do 1 year diploma and rest 2 yrs in industry. At the same time people with Bachelor degree are also eligible for all Government jobs which needs graduation level.
I hope this answer will help, all the best for the future!!