Revisit days - how important are they?

We will struggle with revisit days. My dd’s boarding school is off March 4-20. 3 schools will release acceptances during that time so we may be able to visit some when I drive her back to school. But her school is 9 hours away, and I don’t have unlimited vacation days or $. Driving 9 hours to pick her up for revisit days is not feasible. And we don’t have the $ to be flying all over the place. We may have to rely on a few self tours during Spring break and family weekend at the end of April. We have only visited one of the 7 we are waiting to hear from. She chose her boarding school during Covid and never saw it until drop off.