Вставить предлогиIf you are going ... a shopping centre, make sure you have already decided which shops you want to visit.

If you are going to a shopping center, make sure you have already decided which shops you want to visit. This will help to cut off the time you have to spend on your shopping trip as well as keeping you from wandering around window shopping. If possible, try to do your shopping on weekdays, or if you have to do it at the weekend, go early in the morning to avoid the crowds.