Freezer Rule-
For bochurim coming for “summer zman” (after pesach) – can’t date until after Tisha B’av.
For bochurim coming for “winter zman” (after succos) – can’t date until after Tu B’shvat.
For bochurim coming for “Elul zman” – only bochurim with connections are accepted and the Freezer Rule is waived for those.
Be sure to reserve a rental car months in advance.
Supposedly a bochur entering yeshiva may continue dating a girl he is currently going out with. He must write her name in an envelope and give it to the yeshiva. If he gets engaged they open the envelope to make sure it is the same girl. (Or else?) He also has the right to ask for the envelope back to destroy if need be.