For Muslims who hesitated about the halal or permissibility status of tteok can refer here. Kak Zarina; a Malaysian 'guru' of anything Korean did a great job in 'investigating' about tteok & share the informations to us.
We went to Bukchon Hanok Village right after Changdeokgung. Spent sometime strolling there...and it was already late evening by the time we made our way out from the village. We could have proceed to enter Gyeongbokgung but we figured it would be a waste of time since the palace is closing soon. Having toured Changdeokgung taught us that an hour is NOT enough to see the must-see things in the Grandest Palace of all five palaces in Seoul. Let alone to enter the Folk Museum which is located within the palace ground.
There will always be next time. Considering I have inserted Gyeongbukgung in my upcoming itinerary *insha Allah* the cancelled visit is of nullity.