The JTR still gives you this out:
 
	If…adequate Government quarters are available on 
	the U.S. installation to which a Service member is 
	assigned TDY, but the Service member chooses to 
	use other lodging, 
	the Service member is limited to the 
	reimbursement cost of Government quarters on 
	the assigned TDY installation (44 Comp. Gen. 
	626 (1965)).
 
	Table 2-14. on page 44
 
Other lodging chart.pdf