Have your consultant record your favorite choices. A full-service salon will maintain a file for you, retaining the style information you will need later to order your gown from them. Many bridal shops are individually owned and do not have the same policies. Ask about the fine print before you order. Store samples are not always accurate.
Some shops require cash.
Restate their answers. If you misunderstand something, they can correct themselves, and you will avoid a frustration later on. Place your order when you are comfortable. Sometimes it is nice to have someone to talk to about your worries. A good bridal shop and a skilled consultant can help put your mind at ease.