H1B extension - 4 months left on H1B visa stamp

[Uday353]

I am on H1B through Delhi based INDIAN company onsite assignment and staying from last 3 years here at USA. My H1B VISA extension is due for next 3 years of extension on Sept 30th 2009 and got the extension approval too for next 3 years. Now I am planning to visit INDIA for my marriage on Oct 2009 and planning take a group appointment to go together (Me and my fiancée) on same counter if possible.

Also my Indian company located on Delhi and even I got the existing VISA from Delhi consulate. Since my existing VISA got from Delhi consulate and would like to go to Delhi itself again for my extension VISA as well as my fiancée H4 VISA. Basically y I have three questions –

1. Since I am from Andhra Pradesh and working through Delhi based company in USA, Can I go to Delhi consulate for my VISA extension renewal with my fiancée H4 VISA
2. Can I have a option of using group appointment at Delhi instead of going me and my fiancée in different time slots
3. Is there any issues If I go to Delhi consulate instead of Hyderabad consulate for my VISA stamping with my fiancée H4 VISA

Please help me to understand the process and thanks in advance for your help.