Only used my AT&T at St Thomas and San Juan P.R . Reception was excellent and there was no extra cost.
8 Norwegian: Sky, Jewel, Dawn, Epic, Pearl, Breakaway, Getaway, Escape
11 Windjammer: S/V Legacy X3, S/V Polynesia, S/V Caledonia, S/V Diamant, S/V Sagitta X2 S/V Mandalay X2, S/V Vela
HAL Statendam, MSC Divina