Short answer: No, The Boss cannot do whatever he wants to do.

Long answer: Although it may seem glamourous and a dream job for an aspiring Mafioso wannabe, The Boss of The Family is probably one of the worst jobs you could have. First of all, everyone is gunning for you and your job so you can't really trust too many people and your job is never safe, not to mention your life. Second, The Boss has many, many responsibilities and although a lot of this stuff is delegated to the Underboss and Consigliere and key Capos, The Boss is still the final word and has tremendous power. With this power comes much responsibility and many problems to be frank. A Boss has to be smart and cunning like a fox, and strong and fearless like a lion. This combination is found in very few people and this is why there have been so few quality Dons in the history of The North American Cosa Nostra. The few exceptions include Charles "Lucky" Luciano, Carlo Gambino, Alphonse "Scarface" Capone and to a certain extent Frank Costello, Vincent "Vinnie The Chin" Gigante and Joseph "Joe Bananas" Bonanno.