The Aquariums of Ishgard
Location
Required Items
Rewards
What the allowance actually buys
One allowance here buys 1,083,092 EXP, the best on the Lv 54 Fisher fieldcraft rung — matched exactly by 1 other leve of the 3 there, with the rest trailing at 649,855 EXP or less.
On whether to wait: the best Lv 56 Fisher fieldcraft leve returns 1,191,215 EXP per allowance, 10% more than the best on this rung, while the Lv 52 rung behind tops out at 1,001,778 EXP.
At Lv 54 this data holds 54 leves paying EXP across 3 categories: the 3 Fieldcraft ones average 938,680 EXP per allowance, the 24 Tradecraft ones 400,590 EXP and the 27 Grand Company ones 205,186 EXP, which puts this leve 15% above its own category's average.
Nothing on the turn-in list is craftable in this data: Buoyant Oviform ×3 has no recipe here, so 3 units must come from gathering, a vendor or a drop.
Camp Cloudtop, The Sea of Clouds issues 13 leves in this dataset, Lv 52 through Lv 56, across 4 disciplines.