That week in March will be a peak spring break time.
Much of the country bases their spring break on the end of the third academic quarter. That is typically the second, third, or fourth week of March.
Other parts of the country base it on Easter, either the week before or the week after. Easter in 2022 is April 17, so that is quite late. But that will now coincide with the spring breaks from the Northeast states, which are often the second or third week in April.
Bottom line, spring break crowds ebb and flow from early March to late April, and you are going at one of the heavier weeks. Still better than Christmas, though!