"737 classics were the mainstay of charter operators in the 1980s and 1990s so I must add that suggestions the 733 can't make DLM are at best a very uneducated guess. No further than TFS and Jet2 have used the 733's on them many times."
Indeed they were. At Orion we used to operate 733s from LGW to TLV and BJL. I think the BJL required a tech stop southbound but could sometimes operate direct northbound but that was probably with SOU as a diversion