How much time should be left between serving the appetiser/starter and [serving] the main course?
1) How much time apart should the appetizer and main dish be served?
2) What is the lenght of time between serving appetizer and main dish be served?
Can I phrase the sentences in such a way?
How much time should be left between serving the appetiser/starter and [serving] the main course?
Remember - correct capitalisation, punctuation and spacing make posts much easier to read.
Remember - correct capitalisation, punctuation and spacing make posts much easier to read.