Back2Back and pricing

[MSUjohn]

Hello,
I am thinking of getting my brother (a never-cruiser) a margaritaville at sea cruise for his birthday.
i have never sailed with bahamas paradise cruise line errrr i mean margaritaville at sea so i have two questions.
>incidental fees: apart from what i pay what will he be surprised with? gratuities? fuel surcharge? and so on.
>how about a back-to-back two day? can i book the same room does he have to disembark and do the full embarkation again? 

i can do the 4 days for him for $350 with no single supplement.

>any thoughts? 

thanks

[pr8hd]

Fuel Surcharge ($15 daily)  and Gratuities ($18 daily) are charged after boarding.  

.

You'll have to call MAS Customer Service for answers about B2B procedures.  

[MSUjohn]

13 hours ago, pr8hd said:

Fuel Surcharge ($15 daily)  and Gratuities ($18 daily) are charged after boarding

thank you for your reply.
can i prepay?