Given a travel related situation, and given a specific question about the situation, summarize the question into a title

[EX Q]: Here's my situation. I am currently in France on an internship visa (different than a business and tourist visa) which ends next month. I'm interested in doing some traveling afterwards, ideally on a 90-day Schengen tourist visa. I'm willing to hop over to a non-Schengen country (like the UK) for a couple days and then come back to get the tourist visa if necessary. 

This post seems similar to my question, except the OP is trying to get the tourist visa without leaving the Schengen area.

Is this allowed? Will the border patrol still give me the tourist visa after my internship visa expires? Will it work through the UK or should I go through another non-Schengen country? I have a USA passport.

[EX A]: Can I start a tourist Schengen visit after my long-term Schengen visa is over?

[EX Q]: I am required to pick someone up at the CDG airport. I live in Gif-sur-Yvette in ile-de-France and can get to RER stop "CDG 1" (that caters to CDG terminal 1). I read that I would need to take the CDGval to terminal 1. 

However, the map of terminal 1 level and CDGval level  doesn't quite tell me how to get from the CDGval stop for T1 to the arrivals of T1. There appear to be several "levels" to T1.

Also Is there a particular gate at T1 that arriving passengers exit through? My passenger will be arriving on United airlines.

[EX A]: How to get from Aeroport CDG 1 RER B stop to Terminal 1 arrivals

[EX Q]: I plan to purchase a​ ​​Lufthansa return air ticket, from ​New Delhi, India, to Mexico City​ this May​​. The departing flight has a 5h 50m layover in Frankfurt and the returning flight has a 7h 10m layover in Munich. So, the itinerary is Delhi-Frankfurt-Mexico City and Mexico City-Munich-Delhi.

I have a Bangladeshi passport, with an Indian visa and a Mexican visa. I am planning to apply for a German transit visa (Category A).

I have read that I can't use this category of German visa if I have to pick up my baggage and/or have to check-in again at the transit airport. Will I be able to travel without trouble with these travel documents on this Lufthansa flight? That is, does Lufthansa provide adequate support at the ​departure/transit ​terminal to make sure that I ​don't need to leave the international transit area, stay air-side and don't need to pass through border control/immigration in transit?

And also, is it easier to get the ATV than the usual Schengen visas? I emailed the consulate and they replied that I don't need to submit any financial documents. Hence, I think it should be rather straightforward, right?

Thanks.

[EX A]:
Would a German transit visa serve my purpose?