I’ve only DJ’d one wedding where the caterer showed up two and a half hours late so you’ll likely be fine.
During that wedding, the guests got very hungry and upset. Worst was the extremely-poor communication from the caterer. The owner had someone quit and was now struggling to cook and deliver all the food herself. She had staff at the reception venue, but they kept repeating, “ the food will be here soon”. Literally for hours they repeated this lie. If we had known how bad the situation was, the Bride’s parents could have went and got pizza’s quicker.
When the owner finally arrived with the food, she got in front of everyone and gave a big apology, including excuses. The Bride and her mother were extremely mad. Again, this likely won’t happen to you, but knowing where the closest pizza joint is may be helpful.