The reality for many travelers is that they need some sort of travel document in order to get to the all inclusive vacation packages. These will vary according to the country of origin and the country of destination. For example some countries have visa waivers where they do not see a need for immigration control. Visitors from the European Union or from Canada will face significantly lower visa restrictions than visitors from Africa. This is partly to do with historical ties and also the economic situation of the country in which the passenger hails. A passport is certainly a stringent requirement.
Increased security measures on the all inclusive vacation packages
Following the recent problems with international terrorism, the USA has started some sort of crackdown. They will not accept travelers without biometric passports. Where a visa is granted, there will be notification of all the TSA staff and the immigration official so that they are prepared when the passenger lands. There is specific importance attached to the need to ensure that all these travel requirements are met. If you do not have the right documentation then it is more than likely that the immigration officials will turn you away.
The tour agencies have done a great job of making the whole process easier. For example they will assist the customer to get the right clearances. Tourist visas are relatively easy to get especially if they are backed by a realistic prospect that the client is merely on holiday. The expectation is that they will eventually return home once the visit ends. You really have to stick to the terms and conditions of the tourist visa. There are serious legal consequences for people who do not follow the rules. You also have to ensure that all members of the party have the right documentation.
During the immigration interview there will be just a few basic questions. Most of the issues will already have been settled by travel agent. You simply have to confirm identify and then move on your way. The frequent flyer program might make life easier for you when you are going across the Atlantic. The assumption is that you will be a bona fide tourist. The authorities have no interest in harassing you. Instead they will try to deal with all the elements of the trip at the entry port.
Changing a visa after attending a all inclusive vacation packages
This is almost not allowed in jurisdictions. You have to do the work that brought you to the locality. If you are a tourist then you are only expected to enjoy the amenities. You are not expected to change the purpose of the visit. If you meet someone and decide to settle then you will need to go back to your home land and then reapply for entry under different circumstances. This is normally the way forward in terms of ensuring that there are no problems with immigration on a return visit. If you are a problematic passenger then they will not be very welcoming in the future.