I personally dislike having a statement regarding where should be buried or ashes spread. And also dislike having pre-bought graves since decades from now the cemetery may be under new ownership or even bankrupt. So leave enough money for a decent burial/cremation and make a statement about being buried or ashes spread wherever the administrator of the will sees fit.

My family has made too many world-treks trying to meet a family member’s last wish. All of our family members have promised that they won’t make a specific demand of where buried. Other than my spouse has asked that which ever of us two goes first that they be cremated and then buried with whomever dies last. Neither of us will probably be married again - too set in our ways- so shouldn’t be too difficult to schlep around the cremains.