Arrive 2-3 hours early for Friday namaz at Mescid-i Haram, expect hundreds of thousands of worshippers, and note that tavaf is suspended during namaz.
Attending Jumu'ah at Mescid-i Haram is awe-inspiring. The congregation routinely numbers in the hundreds of thousands. Every namaz here is multiplied by 100,000.
To secure a spot inside the air-conditioned halls, arrive 2 to 3 hours before the Adhan. During Hac season, arrive even earlier. The khutbah is in Arabic and lasts 20 to 30 minutes, with translation available through the Haramain app.
Logistics: tavaf is suspended from the Adhan until after namaz concludes. Major roads close 1 to 2 hours before namaz. Bring water and a small namaz rug if expecting to pray in overflow areas. After namaz, expect 30 to 60 minutes of congestion.