I guess I kind of concur with @amyt and @tad mostly, plus a few questions of my own below.
My memory is a bit fuzzy now, but I recall participation for the 2013 Summit was heavily advertised and I wanted to go so much that I ended up going and Mozilla even helped with visa applications and stuff.
As a Mexico national I do need a visa for the US, but do not need one for UK. Should that be a factor for me to consider?
How do I weigh in if I’m more fitted to be at MozFest, Leadership Summit or Work Week? Am I even worthy to be at any of them? Am I a “leader”?
Is there a proper and polite way for a Mozillian to nudge staff somehow to signal “I’d like to be at the MozFest, Leadership Summit, Work Week”?
For the last Mozilla event I participated was the QA/LATAM Hackathon in Lima for which there were two ways to signal interest detailed at https://wiki.mozilla.org/QA/LATAM_QA_Meetup_2015#How_to_Apply and https://groups.google.com/d/msg/mozilla.community.mexico/J29jg3E_Ut8/KVlUOWUyIOQJ
Again as I was very exited to participate and I’m fond of both QA and l10n I ended up applying both ways but to this day I do not know if I was selected for my contributions to QA or l10n =)
While in Lima, paid staff members of both QA and l10n asked me variants of “Why weren’t you at Whistler?” to which I was too shy to ask “Why you didn’t invite me?” =)
Hope I made sense and sorry for the wall of text…