opps are playing a weak NT and 4cM, but you won't learn much more by interrogating them on their methods - LHO is a sponsor and RHO is likely getting the no-trumps in at the earliest opportunity to avoid problems.
matchpoints in the 7 table final of a weak 30-35 table event, i.e. the field is the cream of a poor crop.
what's your lead? if you lead a heart, which one? you're playing 4th highest, 2nd from pony.