Firstly, it is really nice to see all of these experts taking time to answer applicant questions, I have found a wealth of information by searching the forum and really appreciate it.
Now to the Question..
Educational/Firm Context: I am especially interested in McKinsey but would like to learn more about all 3. I would be applying for an internship as a PhD candidate (Associate-intern) if it makes a difference and would like to start as a generalist until I learn more about projects and the industry. My PhD is in Business and Socioeconomic Science from a small university.
Geographical Context: I study in Austria but am from Canada and am extremely tied to both (partner in one, family the other and friends split between both) so my top choices for the long-term (roughly in order) would be Vienna, Calgary, Toronto.
Language: My German is only B1, I have time to improve but am quite doubtful I will be fluent (or professionally acceptable) by the time I defend my dissertation. In my ideal situation I would complete an internship the last summer of my PhD and then take a few months to focus on language classes before working full-time
Question: Should I apply for an internship only where I 100% hope to work full time, or is it more open to try different locations?
As a short-term internship I would really be happy to go anywhere as getting a good grasp of the work itself and proving myself worthy of a full-time offer would be most important to me. I am just not sure if a full-time offer would be directly tied only to that place or if the office location impacts decisions for a full-time application later on.
sub-question: Are chances of success better for internships in certain places?
For example, I would ultimately like to work in Vienna at least for part of my career but perhaps by starting my career in Canada I would be more successful with the culture/language of the home office and my application might be stronger where PhDs are not as prevalent.