I have not yet heard that teams will be required to arrive early. Keep in mind that classes will be in session for all the participants, and for those teams that win and advance they could be looking at 2 weeks+ In TX, not including an early arrival.
The other thing to keep in mind is that this is not like the W or NBA bubbles that were both established on a single closed campus environment respectively. There will be multiple sites in TX and multiple hotels, with the potential for fans to attend games.