unforseen

Anyone know what the post-interview acceptance rate is at JHU?

Got an e-mail from a professor at USC that I listed on my SOP personally inviting me to PhD preview day to meet with him and tour the lab. However, I have heard nothing from the school itself. Travel expenses out-of-pocket would be prohibitive. How do I handle this?

Suppose a school gives you the option of two different recruitment weekends and you choose the one on a later date. Can that negatively impact your acceptance chances? Does the school wait until both visitation weekends are over before sending out acceptances or do they start to match students with labs immediately after the first visitation weekend?