You will want to dress conservatively.   Dressing professionally and conservatively is a sign of respect for the judge and the court. Acting respectfully is very important for courtroom conduct. Men should wear a suit or dress slacks and a dress shirt. Women should wear a conservative dress, business suit, or dress pants and a dress shirt. Flip flops, excessively high heels, and sneakers shouldn't be worn to a trial. Avoid wearing loud bright colors or all black. Wear only necessary jewelry such as a wedding ring or watch. Don't wear heavy bracelets, earrings, or necklaces. Avoid any clothing that is revealing or that has any explicit language or images on it. Cover any visible tattoos. Sunglasses and hats must be removed before entering the courtroom. If you are going to have friends and family present in court, they will need to know how to conduct themselves.   Any guests in the courtroom should plan to arrive on time for the hearing. Cell phone use is prohibited in the courtroom. Guests should not eat, drink, or chew gum in the courtroom. Children are permitted in most courtrooms, but they will need to be quiet and respectful of the trial. Children who are disruptive may be removed from the courtroom. All conversations should take place outside of the courtroom. You will want to arrive early and wait outside the courtroom to be called.   Contact the court ahead of time if you aren't aware of what time you need to be there. Plan to allow extra time to find parking or to get public transportation. When you get to the courthouse, ask courthouse staff where you should wait. Most court buildings have a security checkpoint.   You may need to go through a metal detector. Make sure you can remove all metal objects from your clothing. Do not bring weapons with you into the courthouse. These items are banned. Avoid bringing drugs and tobacco products with you. Illegal drugs should never be brought to a courthouse. Remember to make eye contact with people you speak to.  Always say "Thank You" to anyone who gives you...

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Write a summary of the previous text in Vietnamese:
Ăn mặc phù hợp khi xuất hiện trước tòa. Thông báo nguyên tắc phòng xử án cho bạn bè. Nắm rõ thời gian bắt đầu xử án và đến sớm. Chuẩn bị qua cổng an ninh. Đối xử tôn trọng với những người mà bạn tiếp xúc.