According to forum posts, some recommended activities in San Jose include visiting the National Theater of Costa Rica, the Pre-Columbian Gold Museum, and the Metropolitan Cathedral of San José. These sites offer a blend of cultural and historical experiences, with opportunities for viewing architecture and learning about Costa Rica's history.

Travelers have called out the National Museum of Costa Rica as a must-visit for those interested in the country's history and culture. The museum provides insights into Costa Rica's archaeological past and offers extensive exhibits.

For many users, participating in walking tours or city tours is a popular activity. These tours can help visitors orient themselves and learn about San José's key attractions and historical sites. Options for guided and self-guided tours are available, allowing flexibility depending on one's schedule and interests.

Some travelers mentioned exploring local markets like the Central Market for a more laid-back experience where one can enjoy local food, crafts, and the daily life of San José residents.

According to forum posts, travelers are advised to arrive at SJO airport at least 3 hours before an international flight to ensure ample time for check-in and security procedures. Some travelers noted that security lines could be lengthy, especially during peak times.

Travelers have called out the convenience of staying at hotels near SJO airport the night before a flight. Many nearby hotels offer airport transfers, which can simplify travel logistics. The proximity of these hotels to the airport typically allows for additional rest before departing.

For many users, navigating SJO airport can be more manageable by utilizing services such as hotel shuttles for transportation to the airport. While inside the airport, amenities like cafes and shops are available, but specifics such as the presence of lounges or extensive dining options were not detailed extensively in the posts.

Some travelers mentioned the absence of luggage storage facilities at the airport, suggesting that managing luggage could require keeping it with you until check-in or utilizing hotel storage services if arriving early.

Some travelers have noted difficulties in finding available rental cars directly at San José airport, with recommendations to book in advance due to frequent shortages. Agencies like Vamos, Adobe, and Service Car Rental are frequently mentioned.

According to forum posts, car rental costs can be high, with mandatory insurance significantly increasing the price. Some users have reported a small car or 4x4 rental costing around $600 for a 16-day period, averaging $38 per day without insurance included.

Travelers have indicated that there are no rental car facilities directly inside the San José terminal, requiring a shuttle to nearby offices. Vamos and other agencies are located close to the airport but still necessitate a short shuttle ride.

For larger groups or specific needs like full-size vans, users suggest contacting companies like Toyota Rent a Car or looking into specialized rentals like Hyundai H1 vans, which are suitable for larger groups but may have manual transmissions and specific insurance requirements.