If you are ever arrested, rearranging your travel plans will be one of the many things you may need to take care of, as soon as possible. We realize that you will have many things to take care of and organize at this point. Prioritizing tasks will be important here, as well as taking help from those who are offering it, like family and friends. They will help alleviate some of the stress by helping to sort through some of the matters that need attending to: like canceling your upcoming vacation.
It could be that you are not be allowed to travel at all while you are out on bail, or it could be that your travels conflict with your scheduled court dates. Even though you had your trip booked and all planned out months before you were arrested, the court is not going to change your date just so you can go on vacation. Keep this in mind. This is a matter you have to take seriously, so canceling or re-scheduling your trip will be a must. A friend of yours can take care of canceling your travel plans for you if you need them to.
Even if your vacation dates do not conflict with your court dates, if the court says you are not allowed to travel at all while out on bail, you will still need to cancel your trip. The court will be confiscating your passport as well, to make sure you do not try to leave town. If you skip town while out on bail, you will be taken back into custody and you will face additional consequences.
If you have no travel restrictions while you are out on bail, and if your upcoming vacation does not interfere with any scheduled court dates, then you are free to go on that vacation. It could be good to get away for a little while and momentarily escape the stress at home. At the same time, consider everything else you need to do to prepare for court. Maybe canceling this trip is necessary so you have time to prepare. If you do plan to forge ahead with vacation, simply notify the court, your lawyer, and your bail agent of where you will be, when, and how they can get ahold of you in case of an emergency. Also provide family and friends with this information as well.