We consider a two-echelon supply chain consisting of a perishable food manufacturer and a retailer.  The perishables have a deterministic shelf life, and the Minimum Life on Receipt (MLOR) requirement mandates that all units be delivered to the retailer in the same period in which they are produced. Otherwise, perishables exceed their MLOR and must be discarded. There are two types of secondary packaging available: cardboard and returnable crates. The manufacturer can opt to replenish the cardboard each period or design an RTI system to pack and distribute products to the retailer in multiple cycles. A cardboard supply shortage may occur in any given period during which no cardboard is available, even if buyers are willing to pay at a higher price. The objective is to determine the quantity of each packaging and the lot size in each period such that the total expected cost is minimized. The primary challenge in this model setting is to effectively integrate dynamic disruption constraints with predictable, time-varying demand changes in order to identify optimal cost-minimizing packaging strategies.