Zardnaar
Legend
You totally skipped over answering the question and only broadened it from "how many times before players start calling the gm unprepared?" to add "and how long before the obvious adversarial arms race results in players feeling like the GM is openly adversarial?". Both of those questions apply because the players approaching eiya video game play to win mindset are% certain that rest early rest often is expected reasonable and reinforced by wotc's treatment of the issue for over a decade given RAW+RAI of the rules
Edit: before anyone thinks to rightly suggest that the players should be better than that, I'll say that such a declaration is far from reaching the level of being barely useful gm support without solid support in the published rules and community engagement from wotc.
Trust the DM i suppose. Players who woukd hard core abuse 5MWD I wish the luck in finding a new DM.
Must be doing something right. 6 players 23. 15. 7 years other 3 are new. Couldn't run 3 games i had at one point.
3-5 is more typical think I hit 9 encounters at lvl12.
Milestone leveling. Fail the milestone you dont level. Learn to pace yourselves its really not hard. 5E default easy mode lol.
I've point blank told them there's nothing I can really do RAW to stop you steamrolling the game. I would have to cheese the CR system or use excessive terrain.
I can kill the lot of them easy enough if I had to.