Arrive before opening if you are chasing scarce inventory, specific dealers, autograph lines, grading intake, or a short show day. Early buyers see fresh cases and have more time to compare tables before the best items move. Check the events calendar and the organizer’s source for admission tiers, VIP entry, parking, and line rules. Early arrival is less important if your goal is casual browsing, supplies, or common singles.
There can also be advantages to arriving later. Dealers may be more willing to negotiate near closing, crowds may thin, and you may make calmer decisions after the morning rush. The tradeoff is that unique cards can be gone. The card show etiquette guide and card show buying tips cover floor behavior and timing. If you miss a target, do not force a bad substitute; use nearby card shops or future shows as the next path. Match your arrival time to that goal instead of copying the most aggressive buyers in line.