I have to prepare things that I do prior to a vacation trip
>> I have to prepare of some things prior to going on a vacation.

When I go to vacation trip, there are something preparation as below.
>> When I go on a vacation, these are the things that I prepare.

At first, I have to plan where to go.
>> First, I have to figur out where to go.
I think it is the most important to assign the destination to stay the acation, because according to place to go for the vacation, Everything will be changed such as a trevelling expenses, a person who i am going to spend time wiith and ect.
>> I think it is important to think of a destination for the vacation because everything such as the travelling expenses, my companion, etc. will depend on where I will go.

Secondly, I should consider who I am going with.
>> Second, I should consider who to go with.
If I spend the vacation with my boyfirend I don't need to make plans for it hardly.
because I will let him make plan for fun our vacation besides
It is possible that I just advise whether his plan is good or not and give advices that he decides good plan.
>> If I would spend the vacation with my boyfriends, I don't need to plan it in detail. I would let my boyfriend plan everything and just confirm if I like his ideas or not. If not, he would have to come up with a better plan.

Lastly, I have to think how much i will pay for my trip broadly.
>> Last, I have to seriously think of the expenses.
When it comes to the travel, money is also very important.
>> When it comes to travelling, money is very important.
If we don't have enough money on my trevel, we might undergo inconvinent experiences, so we should keep a trevelling expenses not to spoil a vacation trip.
>> If we don't have enough money during your trip, we might experience some inconvinience so we should plan our budget to not spoil the vacation.