Let me give you some business oriented langauage, then.
Much of your ‘advice’ is patronising for people who visit here regularly and often sort out their own problems at oh dark o’clock when the office and travel agents are shut, some is based on unestablished assumptions which may or may not pertain to the situation in hand and some plain dangerous, such as sharing a hotel room. Think this one through, in today’s litigious/human rights driven times and you will figure out why.
As to the weather forecast tip, I had to re-read that twice. Weather forecasts are only considered highly accurate a short time in advance, typically 8 hours or less – do you recommend canceling meetings at such short notice?