fifth diner is impossible

I am at leve l 5-4 and it cannot be beaten without a trainer but none exist. I can't seat anyone when tables are full but they keep coming and then I keep having idiots with short amout of hearts which I can't keep up and I can't stop people from leaving cause I can't do 20 things at once the level is unrealistic. How do I submit highscores to playfirst.

It's not impossible, I've beaten it. What you have to do is abuse the podium and the drinks. Also, pick the impatient people out of the crowd and seat them first. Hope this helps!

What worked best for me on that level (and the ones after it) was to seat just a few groups at a time. Say 5-6. That way you have time to keep everyone happy including those in line. Try to pick people with similar patience levels for the same "seating", to make chaining easier. Stand at the podium while the seated customers are eating. Also stand at the podium for awhile at the very start before you seat anyone, and before you seat each batch of groups, that way the people remaining in line will be more content while you serve the tables. If someone in line does get angry just grab them and seat them quickly. Hope this helps. I was stuck on that level for ages before I tried it this way.

everytime i had trouble with a level, i came here to the forum and read every post i could find about that level, and after two or three tries, i passed the level. and then, even tho, i didnt get expert level, i just started the fifth restraunt last night, and tonite i completed it..
hon, the key for me, was only to serve drinks and breads, or snacks, was if they had three hearts or less. and then only if it wouldnt break my chain.
the key thing i found reading all the posts that let me race through a whole restraunt in one day, was staying at the podimm while i seated people... you dont have to leave the podim.. then as soon as i could take their orders and serve them all at the same time i did it, and then went straight back to the podium... then i clicked on each table ONCE to give them their checks, and as long as the people were ok in line, ( still were happy) i cleared the tables. then went back and clicked on the podium... and when they were all happy, started seating again... and remember, just because there are all them tables, and a bar, doesnt mean you have to use them all! i usually didnt seat more than 5 at a time.. and always seat like-mannered people together... boys and girls first, woman and hotshots together, and old men last..
hope this helps, its not my knowledge! i got it all from searching this forum!

All the advice given is great and will help you but I have something I tried to finally get EXPERT on Level 8 of Diner 5. Abuse the podium and preload your arms with snacks and seat only four at a time just like others advise. But what finally put me over the top was not cleaning four tables every time I used them. I'd use a different section for every four groups and when I ran out of tables, THEN I cleaned them in one big chain to rack up big points. At this stage, I got few color bonuses cause everything goes so fast but I think the training clean up got me to the top. Good luck!

Here's my 2 cents on this rest. and it's levels:
Stay at the podium while you seat people. Seat the girls and the boys first, then the women and leave the old guys in line until the very end. Seat in groups of 4 or 5 and chain everything! Stand at the podium until all 4-5 tables are ready to place their orders, collect all the orders, deliver all the orders and then run to the podium and stand there until those 4-5 groups are ready for their tickets. Deliver those tickets first, then swing by and pick up the dirty dishes at all tables. Run to the podium and stand there while you seat your next group of 4 or 5 and repeat...always leaving the old guys to the very end of the level. Forget the snacks until you seat the last groups in the level. They don't make that much of a difference in the first 5 or 6 levels of this rest. Always chain your actions...if you have to wait for a table, just wait...If you've stood at the podium as long as you should those customers will wait as well. You won't get the expert score but you will clear the goal with room to boot! Good luck! And always check the forums for game help...best resource there is!