Its been said before, but I always email for a city/area guide before I go - they have them for most areas worldwide on demand - usually a 30-50 page PDF with highlights, attractions, restaurants, museums, etc. I was recently in San Diego with the family and requested kids activities too - got the standard SD guide and a separate Kids SD guide too. Helpful.
They seem to be regularly updated with hours, etc. Also - many guides have suggested itineraries in multiple variations (number of days, indoor/outdoor, etc) - the kids guide had multiple "weather" options too.
Is this service worth Platinum annual fee? No... there are other ways that fee is worth it. But certainly a nice feature to have if/when needed/wanted.