Unlocking F7
The quest chain to hold an F7 key yourself, from Volcano Mouth to Dragon Falls.

If you follow someone in, you do not need this chain. The rest is how to open the key yourself.
Some quest item packs are already sold in the Era shop, Useful, for 10 cash.
Volcano Mouth, 40+

Start at level 30 in Moon Village, quest Can't Sleep. Finish the chain. The last quest is Farrell's Diary, part 2. That opens F6 and F7 of this map, but you still cannot enter until you finish Official Appointment.
Official Appointment is required for this F7 and the maps after it, unless you follow someone in.
Pick it up from NPC Doug in Libra Village, quest Invasion (1). Do the 3 invasion quests, then go to the top of the map and talk to Noel, Paulo, and Hoffman.
When Noel asks about Farrell, pick:
- Mutant research. Line 3.
- Creating Drake. Line 3.
- The fuller he eats, the higher his knowledge rises. First line.
Forgotten Village, 50+

The key quest is only available at level 52. This chain is long and easy to get stuck on. The blog suggests farming Volcano Mouth to 6x, then going straight to Peace Port F7.
Peace Port, 60+
The key quest is only available at level 65. Start in Mist Village, quest Strange Island. There is a 10-cash pack like the Volcano Mouth one.
The chain goes through Tracking the Trail, Delivering Evidence, and A Sudden Clash. The last quest, Beloved Dream, requires finishing F5 in both Peace Port and Ice Dragon Peak before F7 opens.
Dragon Falls, 70+
This chain also covers the Drakos tower through Elga.
Paris section. Take Forgetful Proof (1) at the Ice Camp and play through part 10. Some quests send you to Drakos floors 2, 6, 12, 20, 30 Gaiden, 37 Kimart, and 50 Antares. The support pack is in Era, Useful, page 2, and already includes tickets. The section ends by defeating Paris.
Dragon Falls F7. The quest sends you to World Peak F5, then a Shaman sends you to Dragon Falls F1, then Dragon Falls F5.
Elga section. Run back to the Ice Camp and help an NPC confess. World Peak asks you to kill 100 monsters. Return to the camp, enter World Peak F1, talk to the Mist Elf, then do World Peak F5. Next is Black Claw Nest, then the quest to fight Elga.