It wouldn't hurt to explicitly state this, especially for those as dense as I am, IMHO.
In Vlg, it seems obvious for the cabins – there's a price for the cabin for the entire period, and there's the number of units we can place in it... In Ekb, there's also a limit on the number of units – and the price...
"Совесть - она либо есть, либо её нет" (с) RedWhait HP