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

"When visiting Montevideo, it's important to avoid discussing politics unless you are well-informed about the country's political situation. Uruguayans are very politically aware and discussions can become heated. Avoid comparing Uruguay to Argentina, as there is a long-standing rivalry between the two countries. This extends to sports as well, particularly football. Uruguayans are known for their punctuality, so try not to be late for appointments or social gatherings. If you are running late, it's polite to call and let your host know. It's considered rude to interrupt someone while they're speaking, so wait for your turn to talk during conversations. Avoid being overly loud or boisterous in public places, as Uruguayans tend to be more reserved and value their personal space. When dining, it's considered impolite to begin eating before everyone has been served. Also, keep your hands on the table (but not your elbows) when you're not eating. Uruguayans are very friendly and hospitable, so refusing an invitation to someone's home can be seen as rude. If you can't attend, be sure to decline politely and offer a valid reason. Finally, tipping is customary in Uruguay, so be sure to leave a tip of around 10% in restaurants and for other services," remarked another expat in Montevideo, Uruguay.