1) 3H/3S. If partner expects more, I might pass (er, edit: clearly meant 2H/2S), but none of my partners do

.
2) Partner's preempt here should be very sound. I'll bid 3NT and pray, but just barely.
3) Odd that they have ten spades.
Anyway, I'm playing the opening leader for a stiff, which means I have only one diamond loser after I rise at T1. If the lead was made quickly, I'm sure it is stiff. Since this is MP, I strongly suspect I can make 6, since I expect the heart K to be on. At these colors, if LHO opened on AJTxxx and out, he got me.
I play a club back to hand and lead a small heart. If the finesse loses, I'm probably down, but if it wins, I cross back with another club (almost 100% that this is going to hold) and take another finesse. If trumps break evenly, I get to discard my two spades and a diamond on the clubs and get to enjoy a good score of +680, with a top being +800 in 4Sx-3.
If it turns out that LHO is 6412, I'm only making 4, but I beat everyone else in 4Sx-2, so I feel okay about it.