You can now not only research the various Thailand car rental services on the internet but you could also go ahead and book for the same provided that you know how to go about it. Hiring an appropriate vehicle for your travel needs within Thailand would be important for you if you are traveling there for a short period of time as you will have to be visiting a number of attractions for which you may not want to keep spending on different taxis which could become quite expensive for you.
By hiring a vehicle for the whole day or even for the whole week you will be able to plan your days accordingly. Instead of visiting a single attraction at a time, it may be a good idea to plan your trip so that you can cover a number of places on the same day which would make everything easier for you.
You should therefore research about the various taxi to Hua Hin services online as you might want to discuss with experts who may have traveled to Hua Hin before or those who may specialize in making arrangements for people to travel to Hua Hin so that you could seek ideas from them on making the most of your trip with a fixed budget. You should liaise with relatives and close friends who may have better experience than yourself about Thailand in general so that they could guide you accordingly.