If it helps, this is the current stuff for the exams:
**For ETOPS alternates the term suitable is used, as weather minima apply, in terms of ceiling and visibility 1 hour before the earliest ETA and 1 hour after the latest. Crosswind forecasts should also be acceptable for the same validity period, and a safe landing should also be accomplished with one engine and/or airframe system inoperative, taking due account of NOTAMs.
Weather minima do not apply to “adequate” aerodromes, which only concern themselves with performance at the expected landing weight, availability of navaids, etc., so the weather conditions must be below alternate minima but above landing minima. You do not need to meet the runway pavement requirements for the regular use of an airport. Under Annex 14 and the ICAO Airport Manual (Document 9157), the aircraft ACN may exceed the runway PCN in an emergency.