IINM, there's 2 different discussions here. Home Vs. Hotel & Home Vs. Parents/In-Laws
Am I wrong? Is everyone (besides me) talking about hotels and the like?
What to wish someone who is making:
Pesach at home - חג כשר ושמח
Pesach at in-laws - חג כשר
Pesach at hotel - חג שמח
Pesach at hotel with in-laws - חג