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

[Q]: I have a 10 year tourist visa for the US and have been back and forth to the US for some years now visiting my partners family, she is American by birth. 
We decided to get married after being together for 3 years. 

Our intention is to go to the US in the summer, get married and celebrate with her family, and then come back to my home country where we both currently live permanently. 

My question is, can we get married on the tourist visa if our intention is to return to our current country of residence?

I've had my own business for a long time here as well as other assets that can easily be proven to show that our intention is to return home, my partner has a job here and we stay together in an apartment that we rent and have a lease for, so lots of information to provide to the customs agent on arrival to show our intent is to marry and then leave to come back home. 

Furthermore, we might decide to apply for a green card for myself in a few years time, but for this trip we have no intention of getting married and staying in the US and applying. 

If anyone has some experience with this is would be greatly appreciated - thanks. 

[A]: Getting married in the US on a Tourist Visa


[Q]: I am currently in Saint Petersburg on a tourist visa (I'm French). I arrived on Tuesday and I'm leaving on Wednesday morning, so I will be a total of 7 working days in Russia, including the arrival and departure days.
I assumed I wouldn't need to register my visa, so I didn't, and neither the hostel where I'm staying nor my sponsor told me anything about it either.

Now I just noticed that because of the world cup the rules have changed, and I was actually supposed to register it within 24 hours, so it's obviously too late now.

What should I do? Should I go try to register it anyway before leaving (and pay whatever fine there is) or should I just forget about it and hope they won't care? Is there a risk they will prevent me from leaving Russia? 

In case that matters, I will be leaving by train to Finland (and on the last day of my visa). 

[A]: I did not register my Russian visa, what should I do?


[Q]: I know in a bus, for instance, (well, at least on a school bus, when I traveled to out-of-town basketball games in high school) the farther back you are, the bumpier your ride tends to be. Is there a similar situation when a vehicle is airborne?

For the quietest ride, you clearly want to sit away from the engines.  But I'm curious if there is a part of the airplane that offers the smoothest ride.  That is, most free from vibrations during flight, or during take-off and landing.

I imagine the answer may be different for aircraft that have their engines mounted on the tail versus those with the engines mounted on the wings.  And maybe other factors play into the equation as well.

[A]:
What section of an airplane offers the smoothest ride?