Given a travel related situation, and given a specific question about the situation, summarize the question into a title

I foolishly left my wallet in Utrecht while interrailing and lost my UK driving license among other things. I've sorted most of the ramifications of the loss but I need another ID to prove I'm over 18 in countries in the EU.

Are there any options other than my passport? Could I obtain some identity card? 

Lost driving license In EU. Other ID methods?

I am planning a trip to northern Italy. I will start it with two days of Giro d'Italia in and around Genoa and then I will move on to Verona for a javascript conference. I was thinking that flying to Milan (from Sweden) would be the best option and then get around by train. However I just now realized that although Genoa is an hour or so from Milan by train - Verona is more like 4 hours and a stop in Bologna. 

Are there any obvious better way to do this than flying to Milan?

UPDATE: I had it wrong about train from Verona to Milan - it is also 1-2 hours. Still it is a bit cumbersome to travel like this.

Airport options for trip to Genoa and Verona

I will be travelling from Lahore to Abu Dhabi to Rome to Dallas to Manhattan KS. The flights are booked in a single ticket with my airline changing from Etihad to American Airlines in Rome. I wanted to know whether I'll go through pre-clearance in Abu Dhabi or will I have to go through Customs in Dallas? 
Secondly, when will I have to recheck my baggage? Will it be when the airline changes in Rome? 


Pre-clearance and Baggage