Start with the attractions you genuinely want to visit, then compare the official dated ticket price with a multi-attraction pass. The pass is usually strongest for three or more paid stops in a short window; at one or two attractions, buying direct is easier and often cheaper. Check the calendar before committing because blackout dates, timed entry, and parking are separate costs.
Buy ahead when a venue uses variable pricing, especially during school breaks and summer weekends. Keep your confirmation on your phone, and read the terms for changes or refunds before paying. A discount is only a saving if the ticket fits your dates and the attraction is open.