What cultural faux pas should I try to avoid making in Kalamata?

"When visiting Kalamata, it's important to respect the local customs and traditions to avoid any cultural faux pas. Firstly, avoid discussing sensitive topics such as politics, religion, and the country's economic situation. Greeks are very passionate about these subjects and it can lead to heated debates. Secondly, don't refuse an offer of Greek coffee or food. Hospitality is a big part of Greek culture and refusing can be seen as disrespectful. Thirdly, don't wave with an open hand, palm facing outwards. This gesture, known as the 'moutza', is considered highly offensive in Greece. Fourthly, don't take photos of people without their permission, especially the elderly. This is considered disrespectful and invasive. Fifthly, don't rush or push in lines. Greeks value patience and respect for others' personal space. Lastly, don't forget to dress appropriately when visiting religious sites. Women should cover their shoulders and knees, while men should avoid wearing shorts. Remember, the key to avoiding cultural faux pas is to observe and respect the local customs and traditions," remarked another expat in Kalamata, Greece.