Division 934 is the performing division within the 07/03/2013 TG. You have joined PIR 07/03/2013 TG 34; there will later be a discussion for that division within that group.
800 and 900 Divisions will be of interest to you since you have a recruit in a performing division. Division 934 is Ship Staff/Honor Guard.
What will your SR's rating (job/specilty) be? That will determine how long you should stay. The RTC has indicated that those flying out to "A" School or training will fly out on 4 July unless there are flight availability issues. Those staying in GL will have Liberty each day of the 4 day weekend.
Also, although the recruter may have given you the correct info, it is best to wait on the form letter before sending letters. (See Letter Writing & Fun Stuff/Questionnaires to send to your Recruit.)
I see that you have joined Parents of A School Sailors in Pensacola and Naval Aviation; you may also want to join Sailors In Pensacola, FL For A School....Corry Station too!!. Two other groups to check out are AIRCREW and Airman Family and Friends. What will your SR's rating be? There may be other groups as well. Since your Sailor will fly out, I suggest that you stay through Friday, just in case, and then be prepared to change your plans if your Sailor flies out on a different day than Thursday.