Yay, officially engaged! He popped the question at one of the two coffee bars in Edinburgh where JK Rowling wrote HP. The ring is Gryffindor colours, and while I knew it was coming, I thought it was coming in August or December....not now. Two points to Ravenclaw (FI's Pottermore house...I hedge between Gryff and Slytherin

)
Anyway, we told both our families about the engagement (his threw a hissy fit over not receiving personal international phone calls, mine on skype were like 'grats' -- foreshadowing, hint hint') and we immediately stated that the wedding was going to be small -- 10-15 people, 20s max. We told both families that the people we could guarantee invites to were immediate family -- parents, siblings, and the partners of siblings. Both of us are introverted.
FI's father stated that we "forgot" people. We said we didn't -- we don't have the budget to include aunts, uncles, cousins, etc -- keep in mind that FI is from the South, and 5th cousins seem to have a reasonable expectation of invite. FFIL (probably at the insistence of FMIL) then sent a guest list of 13 people.
I had to reply and state, "I have a family too, and you just sent a 13 person list for the 10-15 people we're inviting. That's not going to happen." Some people might say the difference between 15 and 30 is nothing when their guest list is over 100, maybe, but when it's a 100% increase in population, it's a huge deal. FI and I are both PhD students, and I'm not quite sure where they think the money for this wedding is coming from. My parents don't do the money thing to help out kids unless it's dire. His parents went for broke on putting his brother thru college (it took 7 years) and paying for his wedding. We're not expecting them to pony up (especially since I am not the make and model of wife they wanted -- they're decidedly more into the religious submissive wife and ....I'm just nope.)
My parents are fine with us eloping, doing a small wedding, whatever -- as long as we can afford it without going into debt or begging off. They had a budget conscious wedding and reception back in the day. They're totally cool. FI is in agreement with me and supportive. FI's family is rapidly devolving into a crew of proxy Groomzillas. They will not be pleased when we announce our venue -- it's likely going to be in the UK instead of TX.
TL;DR: Groomzilla-by-Proxy Family want at least 30 people at this wedding, preferably 150+ in Texas, while FI and I want 10-15 in the UK. Let the festivities begin.