Do githyanki sleep on their raiding ships? Or do they put off sleep until they return to Tu’narath? If they do sleep on their ships? What is their bed configuration? @Wizards_DnD @JeremyECrawford @ChrisPerkinsDnD @Dan_Dillon_1 @TheEdVerse @adamofadventure #dnd #rpg

— Dan Stivers (@dan_stivers) January 5, 2020

While creatures on the Astral Plane don't age or require food or drink, they still need to sleep. Githyanki themselves have no special way to avoid that, so they'll have bunks or berths on their ships in an efficient configuration, similar to Material Plane military vessels.

— Dan Dillon 👥 (@Dan_Dillon_1) January 5, 2020

Years back, chatting with Jeff Grubb re. Spelljammer, we had wall bunks and then a "web" of hammocks. When attacking, PCs sliced the hammock cords, spun the hammocks at the same time, and had entrapped awakening foes to fling around as bludgeons. DaveSutherlandROARED!#Realmslore

— Ed Greenwood (@TheEdVerse) January 6, 2020