Large Oktoberfest Group Illustration

I need a single, high-resolution illustration that captures a lively Oktoberfest mood for a group of 14 of us. One of us is celebrating a birthday, so please place them in the center in front of a "50." There are 3 that should be more in the center and 2 that need to be ensured are not placed next to each other—details will be shared to avoid revisions.

Please place everyone in traditional outfits, have plenty of foaming beer steins in hand, and set the scene against classic festival tents so the setting is unmistakable. Ensure some banners spelling out "Happy Birthday," "Ein Prosit," and "Gemütlichkeit."

I prefer a realistic artistic style rather than cartoonish caricatures—each person must be highly recognizable while maintaining a fun and celebratory feel. The final artwork should be delivered as a print-ready PNG or PDF (minimum 300 dpi) and a layered source file so I can order posters and gifts in different sizes later.

I am looking for someone who can conclude this by next Monday, 21st September. Once confirmed, I will send reference photos along with any other details or answers you require to get started.