Camelot

Just use any good cavalry (assassin, caster, rider) units to kill the demon pillar, standouts would be Waver, Ozy, Jack, Xuanzang and Kintoki (rider). For the final boss, any strong saber should work. I personally used an Okita. Mash is also really valuable for that one, recommended to level her skills, especially since they are relatively cheap. I'm afraid I can't help with Orion tho, don't have her. Euryale and Archer Altria could probably also do it. Also with Gawain, if you can't get close to beating him even with 3 command spells, maybe consider levelling your servants some more, it generally helps.

There are servants that can solo him. I used someone's maxed Archer Arturia to do so, along with a few random weak servants to support her with taunts, evade/invulnerability, buffs, debuffs, heals, and art chains before dying. I also used the initial mystic code to give her an evade before he used his NP and an attack boost when using hers. If you try this, you'll notice how she can easily fill her NP gauge after a NPAA chain, so you basically just spam your NP until he dies.

But that's just the method I used and you're free to ignore it if you want. I unfortunately don't have any servants you can use (my strongest Archer is Emiya), but you should consider this strategy for Gawain. Haven't reached the final boss yet, so I don't have any advice. Best of luck!

Wait for 1/2 Ap costs, you have a whole month to clear it

Np spam Gwain and plan on using your command spells. Can also try steno to stall.

Deamon pillar isn't too bad, just bring st np rider, assassin, or casters.

Final boss is really straight forward and easier than the fight with Gwain imo because there were no gimmicky tricks.

Watch out for the other fights against the knights of the round table. All have gimmicks like Gwain, but a bit easier to deal with if you know what to expect. Mordred is always at full charge, so have good defense strategy. Tristan reverses class effectivies so bring sabers. Lancelot is a ruler in disguise so bring zerkers and avengers.

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Just comment me below if you need me to change servant based on your need.
make sure you still upgrade your servant, good luck !

Supports will carry you for the most part. I recommend Cu Alter for everything except boss fights, and for boss fights, a strong ST servant with class advantage will normally be enough. Keep in mind that you can cheese boss fights with command seals anyways, so you can certainly advance even if your servants aren't all leveled as much as you would have wanted them to be.
Regarding the pillar, i recommend Jack, she pretty much soloed it for me.

Also, LMAO about the 30 solomon SQ, i'm willing to bet they will either give out nothing, or they are gonna give out 10 just like they did with the 30 SQ we should have gotten back at the anniversary.