When visiting Seattle, it's helpful to keep a few practical tips in mind. First, the area code for Seattle is 206, while surrounding areas use different codes like 425 and 253. If you need a mobile phone, prepaid options and SIM cards are readily available at various stores, kiosks, and supermarkets throughout the city. For staying connected, Seattle has a map of public Wi-Fi sites, with many libraries, museums, coffee shops, and restaurants offering free access.In terms of local customs, Seattle has a casual dress code, so feel free to wear comfortable attire, even at formal events like the Seattle Opera and Symphony. Tipping is customary, with 15-20% being standard for service workers.Lastly, due to Seattle's unpredictable weather, layering is key. Mornings can be cool, and temperatures near the water are often lower than inland. It's wise to pack practical accessories like umbrellas and waterproof jackets, especially during the rainy season from late October to early March. These tips will help you enjoy your stay in Seattle to the fullest!