Another tip, particularly for anyone waiting in queue: do the daily Hunt bills.

In Stormblood, you get a minimum of ~110k XP per bounty. At level 65-66, you should be able to complete all of them (save the occassional single one in Lochs). At level 69, completing all three daily bills nets you about 2 million worth of XP.

(Similarly, you can do the Heavensward bills between 51-60. Plus the Centurio seals and 17,5k gil - if you do them all - are always handy).