Check the exact platform pair first
Cross-platform questions are not one single yes-or-no problem. A player joining from Steam, Xbox, PC Game Pass, or PlayStation may face different support than another platform pair. Before renting a server or starting a long shared save, confirm the exact platform pair and the current server notes for that version.
Dedicated servers change the decision
If the group wants a persistent world, treat server support as part of the crossplay answer. A platform pair that works for normal multiplayer may still have server limits, account requirements, or version timing problems. Decide the host platform, server type, and update cadence before committing a group route.
How to avoid wasting a group start
Run a short join test before choosing a base location or breeding plan. Have each player join, fast travel, leave, and rejoin. If that works cleanly, then move into base planning, resource routes, and shared Pal roles.