AA62,
Yourself and MalDrop are absolutely correct in your assertion that the no night stop policy in Belize was part of the operational plan of the time. In my day, as a GE, Belize trips were a standard night stop, with no parking restriction. The practice experienced by BomberH did though continue, and certainly both the UN relief mission in to Sarajevo from Falconara and the Kigale slip through Dar Es Salaam both precluded night stops at the "coal face". I'm sure others will have examples of getting in and out of airheads during tactical transport operations.
Smudge
