No. Many consultations happen before a problem exists reviewing a contract before signing it, or asking about the legal implications of a decision you're considering. Prevention is often the most valuable use of a consultation.
Consultation fees are discussed openly before you commit to anything, so you'll know what to expect financially before the conversation even begins.
Both options are available. An initial conversation can often be handled over a phone call or WhatsApp message, with an in-person meeting recommended if documents need to be reviewed in detail or the matter is particularly complex.
Any relevant documents notices, contracts, agreements, or correspondence related to your situation are helpful, though a consultation is still useful even if you don't have everything on hand.
That's fairly common, and it's exactly what a general consultation is for identifying which area of law actually applies to your situation, or clarifying that multiple areas are involved.