Dose anyone know of any quests or ways for me to get pack or vault expanders (without having to buy crystals) or what other points I will/may get them in the main quest? Aside from the ones actually given to me earlier in the main quest I haven't been able to get any more. I haven't been lucky to even revive any from the combo leveler gift packs -the ones that give you an expander, mana orb, etc-.

If you can't buy the pack expanders from player shops, you will need Crystals. However, Vault expanders may be bought with 100 Guild Contribution points from the Guild Management Officer in Starglade.

You get a Pack Expander for 15 Daily Sign-in's, and the three from the MQ before level 25 (so that your entire first page is unlocked). Other than that, I don't know if there are any other Pack Expanders as part of the questing experience.

But as posted above, it's easy to get Vault Expanders with Contribution points.