Back in the Old Corps (65-67) I did a 13 month tour in RVN. We did get R&R but you had to have a quota, and then off you went. Depended on quotas as to where you got to go. Our unit had a big turnover at one point in time and I got to do a seconed R&R. First one was in Japan in December 66, and then spent my birthday in Bangkok in June 67. Normally you had to be in country for a minimum of 6 months to get R&R and only the married guys would choose Hawaii. They opened up Australia right after I left.